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Finding the Third Proportional to 309 and 569

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Solution

The third proportional to 309 and 569 is: 1,047.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    309 : 569 = 569 : x
  2. Step 2: Convert to fraction form
    309/569 = 569/x
  3. Step 3: Cross multiply
    309x = 569 × 569
  4. Step 4: Simplify right side
    309x = 323,761
  5. Step 5: Solve for x
    x = 323,761/309
  6. Step 6: Final answer
    x = 1,047.77

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Why These Related Problems?

These problems maintain the same ratio (1.84) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.