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Finding the Fourth Proportional to 95.20, 131.42 and 62.47

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Solution

The fourth proportional to 95.20, 131.42 and 62.47 is: 86.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    95.20 : 131.42 = 62.47 : x
  2. Step 2: Convert to fraction form
    95.20/131.42 = 62.47/x
  3. Step 3: Cross multiply
    95.20x = 131.42 × 62.47
  4. Step 4: Simplify right side
    95.20x = 8,210.32
  5. Step 5: Solve for x
    x = 8,210.32/95.20
  6. Step 6: Final answer
    x = 86.24

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.