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Finding the Third Proportional to 862.13 and 1,171.31

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Solution

The third proportional to 862.13 and 1,171.31 is: 1,591.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    862.13 : 1,171.31 = 1,171.31 : x
  2. Step 2: Convert to fraction form
    862.13/1,171.31 = 1,171.31/x
  3. Step 3: Cross multiply
    862.13x = 1,171.31 × 1,171.31
  4. Step 4: Simplify right side
    862.13x = 1,371,972.97
  5. Step 5: Solve for x
    x = 1,371,972.97/862.13
  6. Step 6: Final answer
    x = 1,591.39

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Why These Related Problems?

These problems maintain the same ratio (1.36) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.