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Finding the Third Proportional to 502.13 and 748.78

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Solution

The third proportional to 502.13 and 748.78 is: 1,116.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    502.13 : 748.78 = 748.78 : x
  2. Step 2: Convert to fraction form
    502.13/748.78 = 748.78/x
  3. Step 3: Cross multiply
    502.13x = 748.78 × 748.78
  4. Step 4: Simplify right side
    502.13x = 560,673.36
  5. Step 5: Solve for x
    x = 560,673.36/502.13
  6. Step 6: Final answer
    x = 1,116.60

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.