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Finding the Third Proportional to 87.38 and 210.88

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Solution

The third proportional to 87.38 and 210.88 is: 508.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    87.38 : 210.88 = 210.88 : x
  2. Step 2: Convert to fraction form
    87.38/210.88 = 210.88/x
  3. Step 3: Cross multiply
    87.38x = 210.88 × 210.88
  4. Step 4: Simplify right side
    87.38x = 44,468.27
  5. Step 5: Solve for x
    x = 44,468.27/87.38
  6. Step 6: Final answer
    x = 508.94

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Why These Related Problems?

These problems maintain the same ratio (2.41) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.