The cross products are equal, so the ratios are in proportion.

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Presentation transcript:

The cross products are equal, so the ratios are in proportion.

The cross products are not equal, so the ratios do not form a proportion.

More Examples

You can use cross products to find a missing term in a proportion. This is known as solving the proportion. Solving a proportion is similar to solving an equation. Solve: Steps: 1. Write the cross products 2. Multiply 3. Use the inverse operation 4. Round to the nearest hundredth when needed

Steps: 1. Write the cross products 2. Multiply 3. Use the inverse operation 4. Round to the nearest hundredth More Examples:

Steps: 1. Write the cross products 2. Multiply 3. Use the inverse operation 4. Round to the nearest hundredth More Examples:

Steps: 1. Write the cross products 2. Multiply 3. Use the inverse operation 4. Round to the nearest hundredth More Examples:

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