Question

A model of a skyscraper is made using a scale of 1 inch: 75 feet. What is the height of the actual building if the height of the model is 19.4 inches? (proportion and actual height needed)

Answer 1

145.5 ft

Explanation:

Since 1 inch = 75 feet, we can use this same equation and mutliply 19.4 inches on both sides:

1(19.4) = 75(19.4)

We can than simplify both sides to find our answer:

19.4 = 145.5

And don't forget to identify the unit:

145.5 ft (feet)