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6th-8th Grade Math: Practice & Review55 chapters | 469 lessons

Solve the proportion for the unknown x:

25 / 15 = 125 / x

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Use the worksheet and quiz to determine what you know about finding unknowns in proportions. Specific topics you'll need to understand include how to calculate a proportion with an unknown and how to recognize proportions which are correctly set up.

The quiz will test you on:

- Solving proportions for the unknown x
- Finding the proportion of 5/22 = 6/x
- Calculating the ratio of butter needed in a given recipe

These study skills will be practiced:

**Reading comprehension**- ensure that you draw the most important information from the related lesson on finding unknowns in proportions**Problem solving**- use acquired knowledge to solve proportion practice problems**Information recall**- access the knowledge you've gained regarding recognized ways to write a ratio

Use the lesson called How to Find an Unknown in a Proportion to explore this subject further. The lesson covers the following objectives:

- Define ratio
- Understand what a proportion is
- Apply calculations for proportions
- Learn how to check results of calculations

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Lesson
10 in chapter 50 of the course:

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6th-8th Grade Math: Practice & Review55 chapters | 469 lessons

- Ratios & Rates: Definitions & Examples 6:37
- How to Find the Unit Rate 3:57
- How to Solve a One-Step Problem Involving Ratios 4:32
- How to Solve a One-Step Problem Involving Rates 5:06
- How to Solve Problems with Money 8:29
- Proportion: Definition, Application & Examples 6:05
- Calculations with Ratios and Proportions 5:35
- How to Solve Problems with Time 6:18
- Distance Formulas: Calculations & Examples 6:31
- How to Find an Unknown in a Proportion
- Proportional Relationships Between Two Quantities
- Identifying the Constant of Proportionality 6:10
- Representing Proportional Relationships by Equations
- Graphing Proportional Relationships
- Proportional Relationships in Multistep Ratio & Percent Problems
- Constructing Proportions to Solve Real World Problems
- Go to 6th-8th Grade Math: Rates, Ratios & Proportions

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