Practice solving ratio and proportion problems in math
Quick Math Guide
∷ In a proportion, the product of extremes = product of means∷ (First term) x (Fourth term) = (Second term) x (Third term)
Practice Worksheet
1. The ratio of boys and girls in a camp is 9:8. If the number of boys is 18. Find the number of girls.
2. The ratio of apples to oranges in a box is 2:11. Find the number of apples if the number of oranges is 121.
3. Find the fourth proportional of 5, 9 and 45.
4. Find the mean proportional between 4 and 9.
5. Find the fourth proportional of 3, 6 and 18.
2. The ratio of apples to oranges in a box is 2:11. Find the number of apples if the number of oranges is 121.
3. Find the fourth proportional of 5, 9 and 45.
4. Find the mean proportional between 4 and 9.
5. Find the fourth proportional of 3, 6 and 18.
Answers:
1. 16
2. 22
3. 81
4. 6
5. 36
