Proportion Word Problems

Front

What is a proportion?

Back

A proportion is an equation that states that two ratios are equal.

Tags

CCSS.7.RP.A.2A

Front

How do you find a missing value in a proportion?

Back

To find a missing value in a proportion, you can cross-multiply and solve for the unknown.

Tags

CCSS.7.RP.A.2B

Front

What is the formula for finding the weight of an object based on a known ratio?

Back

If you know the weight of a certain number of items, you can use the formula: Weight of item = (Total weight / Number of items) * Desired number of items.

Tags

CCSS.6.RP.A.3B

Front

If the ratio of two quantities is 3:5 and one quantity is known, how do you find the other quantity?

Back

Use the formula: Other quantity = (Known quantity / Ratio part) * Other ratio part.

Front

What does it mean for two ratios to be proportional?

Back

Two ratios are proportional if they can be expressed as equivalent fractions.

Tags

CCSS.7.RP.A.2D

Front

If Alana's hair grows 2 inches in 4 months, how much will it grow in 12 months?

Back

8 inches.

Tags

CCSS.6.RP.A.3B

Front

If 24 water bottles weigh 20 pounds, how much do 150 water bottles weigh?

Back

180 pounds.

Front

What is the first step in solving a proportion word problem?

Back

Identify the known quantities and the relationship between them.

Tags

CCSS.7.EE.B.3

Front

How can you check if two ratios are proportional?

Back

You can cross-multiply the ratios and see if the products are equal.

Tags

CCSS.7.RP.A.2A

Front

What is a ratio?

Back

A ratio is a comparison of two quantities, showing how many times one value contains or is contained within the other.

Tags

CCSS.6.RP.A.2

CCSS.6.RP.A.1