a. **Ratio**.

(1)

The relationship of two quantities.

(2)

May be expressed as a:

(a) Ratio

1:8, 1:200

(b) Fraction

1 _1

8, 200

b. **Proportion**:

The equality of two ratios

1=3

2 6

A check as to the equality of two ratios can be made by cross multiplying.

a. Multiply the numerator of the first ratio times the denominator of the second

ratio.

b. Then, multiply the denominator of the first ratio times the numerator of the

second ratio.

c. If the ratios are the same or equal, the results of the cross multiplication will

be the same.

EXAMPLE:

1= 3

2 6

1

3

2

6

MD0904

2-2

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