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Finding the Fourth Proportional to 92.52, 127.56 and 84.75

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Solution

The fourth proportional to 92.52, 127.56 and 84.75 is: 116.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    92.52 : 127.56 = 84.75 : x
  2. Step 2: Convert to fraction form
    92.52/127.56 = 84.75/x
  3. Step 3: Cross multiply
    92.52x = 127.56 × 84.75
  4. Step 4: Simplify right side
    92.52x = 10,810.71
  5. Step 5: Solve for x
    x = 10,810.71/92.52
  6. Step 6: Final answer
    x = 116.85

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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.