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Finding the Fourth Proportional to 64.31, 95.96 and 62.76

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Solution

The fourth proportional to 64.31, 95.96 and 62.76 is: 93.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    64.31 : 95.96 = 62.76 : x
  2. Step 2: Convert to fraction form
    64.31/95.96 = 62.76/x
  3. Step 3: Cross multiply
    64.31x = 95.96 × 62.76
  4. Step 4: Simplify right side
    64.31x = 6,022.65
  5. Step 5: Solve for x
    x = 6,022.65/64.31
  6. Step 6: Final answer
    x = 93.66

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.