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Finding the Fourth Proportional to 87.47, 130.96 and 63.03

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Solution

The fourth proportional to 87.47, 130.96 and 63.03 is: 94.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    87.47 : 130.96 = 63.03 : x
  2. Step 2: Convert to fraction form
    87.47/130.96 = 63.03/x
  3. Step 3: Cross multiply
    87.47x = 130.96 × 63.03
  4. Step 4: Simplify right side
    87.47x = 8,254.41
  5. Step 5: Solve for x
    x = 8,254.41/87.47
  6. Step 6: Final answer
    x = 94.37

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.