1. The Ratio of two quantities a and b is given by a:b = a/b and the formula for Proportion for two ratios a:b and c:d is a/b = c/d.
2. The proportion formula can be expressed as, a/b = c/d or a : b : : c : d.
3. Ratio and Proportion Tips and Tricks and Shortcuts
- If x : y and z : a, then it can be solved as (x*z)/(y*a).
- If x/y=z/a=b/c, then each of these ratios is equal to (x+z+e) ⁄(y+a+f)
- If x/y=z/a, then y/x=a/z (Invertenao)
- If x/y=z/a, then x/z=y/a (Alterenao)
- If x/y=z/a, then (x+y)/y=(z+a)/a (Componendo)
