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Finding the Fourth Proportional to 95.43, 131.79 and 62.70

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Solution

The fourth proportional to 95.43, 131.79 and 62.70 is: 86.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    95.43 : 131.79 = 62.70 : x
  2. Step 2: Convert to fraction form
    95.43/131.79 = 62.70/x
  3. Step 3: Cross multiply
    95.43x = 131.79 × 62.70
  4. Step 4: Simplify right side
    95.43x = 8,262.92
  5. Step 5: Solve for x
    x = 8,262.92/95.43
  6. Step 6: Final answer
    x = 86.59

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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.