Writing and Solving Proportions

Proportions are equations stating that two ratios are equivalent. Learn how to write and solve proportions using tables, columns, and rows. Understand the cross product property in proportions and practice identifying proportional relationships. Apply these concepts to real-life scenarios like reading books.

• Proportions
• Ratios
• Equations
• Cross Product
• Practice

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Uploaded on Mar 10, 2025 | 0 Views

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1. Writing and Solving Proportions

2. Proportions Proportion is an equation stating that two ratios are equivalent. Proportional are two quantities that form a proportion.

3. Writing Proportions You can write proportions in three different ways: 1. Using a table 2. Using columns 3. Using rows

4. Example:

5. Cross Product In the proportion ? ? ?, ?= Cross products are the products of a d and b c

6. Cross Products Property The cross products of a proportion are equal.

7. Practice Tell whether the rations form a proportional relationships: 1 2, 5 10 4 6,18 24 25 20,15 12 10 3,5 6

9. Practice You read the first 20 pages of a book in 25 minutes. You read 36 pages in 45 minutes. Is the number of pages read proportional to your time?