Lesson 5-3 The Percent Proportion

Definition Percent Proportion -

Example 1 22 is what percent of 110? 22  100 ÷ 110 = x x = 20

Examples 34 is what percent of 136? 34  100 ÷ 136 = x x = 25

Example 2 What number is 80 % of 500? 80  500 ÷ 100 = x x = 400

What number is 70% of 600? 70  600 ÷ 100 = x x = 420

In , Lewis and Clark Expedition reported that it rained 94 days, which was about 89% of their days in Oregon. How many days did the expedition spend in Oregon? Example 3 94  100 ÷ 89 = x x ≈ or 106 days.

From 1999 to 2001, Derek Jeter had 11 hits with the bases loaded. This was about 30% of his at bats with the bases loaded. How many times was he at bat with the bases loaded? Example 11  100 ÷ 30 = x x ≈ 36.7 or 37 at bats