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8-1 Ratios and Proportions

8-1 Ratios and Proportions. Four Key Terms Two Properties. Proportion. A statement that two ratios are equal. . Key Terms. and. Extended proportion. Written form of three or more ratios are equal. . Key Terms. Properties of Proportions. Cross-Product Property. (1). (2). (3). (4).

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8-1 Ratios and Proportions

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  1. 8-1Ratios and Proportions Four Key Terms Two Properties

  2. Proportion A statement that two ratios are equal. Key Terms and

  3. Extended proportion Written form of three or more ratios are equal. Key Terms

  4. Properties of Proportions Cross-Product Property (1) (2) (3) (4)

  5. Scale drawing Scale A drawing in which all lengths are proportional to corresponding lengths. A comparison of each length in a drawing to the actual length. Key Terms

  6. #1 Answer the following A photo that is 8 in. wide and 10 in. high is enlarged to a poster that is 2 ft. wide and 2.5 ft. high. What is the ratio of the height of the photo to the height of the poster?

  7. #2 Write two equivalent proportions (1) (2) (3) (4)

  8. #3a Solve each proportion Cross-Product Property

  9. #3b Solve each proportion Cross-Product Property

  10. #4 Find the dimensions of the scale drawing • You want to make a new scale drawing with a scale of 1 in. = 4 ft. What would be the dimensions of your 14 ft.-by-10 ft. bedroom in this scale drawing?

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