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Finding the Third Proportional to 87.88 and 140.50

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Solution

The third proportional to 87.88 and 140.50 is: 224.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    87.88 : 140.50 = 140.50 : x
  2. Step 2: Convert to fraction form
    87.88/140.50 = 140.50/x
  3. Step 3: Cross multiply
    87.88x = 140.50 × 140.50
  4. Step 4: Simplify right side
    87.88x = 19,740.25
  5. Step 5: Solve for x
    x = 19,740.25/87.88
  6. Step 6: Final answer
    x = 224.64

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Why These Related Problems?

These problems maintain the same ratio (1.60) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.