About Proportion Definition:

When two ratios are equal, they are called a proportion. For example, let’s think about a school that has 30 students and 5 teachers. The ratio of teachers to students is 1:6. Another school has 120 students and 20 teachers. The ratio of teachers to students is also 1:6. These two ratios represent a proportion.


Test Objectives
  • Demonstrate the ability to use the equality test for fractions to determine if two fractions are equal
  • Demonstrate an understanding of the definition of a proportion
  • Demonstrate the ability to determine if two ratios represent a proportion
Proportion Definition Practice Test:

#1:

Instructions: Determine whether each is a proportion.

a)

 8  ?  2
10 5

b)

4  ?   8
7 14

c)

2  ?  5
3 7

#2:

Instructions: Determine whether each is a proportion.

a)

4 yards of yarn  ?  20 yards of yarn
3 sweaters 15 sweaters

b)

6 dollars  ?  8 dollars
3 pesos 7 pesos

c)

13 men  ?  39 men
26 women 52 women

#3:

Instructions: Determine whether each is a proportion.

a)

5 grams salt  ?  30 grams salt
20 gallons water 100 gallons water

b)

8 defects  ?  48 defects
120 rims 720 rims

#4:

Instructions: Determine whether each is a proportion.

a)

14 homes sold  ?  7 homes sold
124 homes viewed 62 homes viewed

b)

10 miles  ?  25 miles
2 gallons of gas 3 gallons of gas

#5:

Instructions: Determine whether each is a proportion.

a)

18  ?  36
10 40

b)

4 turtles  ?  8 turtles
7 dogs 14 dogs

c)

3 women  ?  27 women
5 boys 40 boys

Written Solutions:

#1:

Solutions:

a) not a proportion

b) proportion

c) not a proportion


#2:

Solutions:

a) proportion

b) not a proportion

c) not a proportion


#3:

Solutions:

a) not a proportion

b) proportion


#4:

Solutions:

a) proportion

b) not a proportion


#5:

Solutions:

a) not a proportion

b) proportion

c) not a proportion