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Finding the Fourth Proportional to 63.52, 95.11 and 53.80

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Solution

The fourth proportional to 63.52, 95.11 and 53.80 is: 80.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    63.52 : 95.11 = 53.80 : x
  2. Step 2: Convert to fraction form
    63.52/95.11 = 53.80/x
  3. Step 3: Cross multiply
    63.52x = 95.11 × 53.80
  4. Step 4: Simplify right side
    63.52x = 5,116.55
  5. Step 5: Solve for x
    x = 5,116.55/63.52
  6. Step 6: Final answer
    x = 80.55

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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.