Question

Define the term "proportiona" with an example and non-example.​

Answer 1

A proportion is an equation written in the form stating that two ratios are equivalent.

In other words, two sets of numbers are proportional if one set is a constant times the other.

Example of Proportion

are examples of proportions.

Solved Example on Proportion

Ques: A cardboard model of a Honda bike is part of an outdoor display. Its height is 4 ft. The actual Honda bike is 5 ft long and 2 ft high. Find the length of the model, if its dimensions are proportionate to the real bike.

Choices:

A. 11 ft 

B. 12 ft 

C. 9 ft 

D. 10 ft 

Correct Answer: D

Solution:

Step 1: Let n be the length of Honda bike cardboard model. 

Step 2:                [Write a proportion.] 

Step 3: n × 2 = 4 × 5         [Write the cross products.] 

Step 4: n = 10 [Simplify the expression.] 

Step 5: The length of the Honda bike cardboard model is 10 ft.