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Finding the Third Proportional to 285.38 and 616.13

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Solution

The third proportional to 285.38 and 616.13 is: 1,330.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    285.38 : 616.13 = 616.13 : x
  2. Step 2: Convert to fraction form
    285.38/616.13 = 616.13/x
  3. Step 3: Cross multiply
    285.38x = 616.13 × 616.13
  4. Step 4: Simplify right side
    285.38x = 379,610.02
  5. Step 5: Solve for x
    x = 379,610.02/285.38
  6. Step 6: Final answer
    x = 1,330.21

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Why These Related Problems?

These problems maintain the same ratio (2.16) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.