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Finding the Fourth Proportional to 67.66, 92.76 and 62.92

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Solution

The fourth proportional to 67.66, 92.76 and 62.92 is: 86.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    67.66 : 92.76 = 62.92 : x
  2. Step 2: Convert to fraction form
    67.66/92.76 = 62.92/x
  3. Step 3: Cross multiply
    67.66x = 92.76 × 62.92
  4. Step 4: Simplify right side
    67.66x = 5,836.46
  5. Step 5: Solve for x
    x = 5,836.46/67.66
  6. Step 6: Final answer
    x = 86.26

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.