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Finding the Third Proportional to 127.97 and 166.92

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Solution

The third proportional to 127.97 and 166.92 is: 217.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    127.97 : 166.92 = 166.92 : x
  2. Step 2: Convert to fraction form
    127.97/166.92 = 166.92/x
  3. Step 3: Cross multiply
    127.97x = 166.92 × 166.92
  4. Step 4: Simplify right side
    127.97x = 27,862.91
  5. Step 5: Solve for x
    x = 27,862.91/127.97
  6. Step 6: Final answer
    x = 217.73

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Why These Related Problems?

These problems maintain the same ratio (1.30) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.