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Finding the Fourth Proportional to 77.52, 116.52 and 55.92

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Solution

The fourth proportional to 77.52, 116.52 and 55.92 is: 84.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    77.52 : 116.52 = 55.92 : x
  2. Step 2: Convert to fraction form
    77.52/116.52 = 55.92/x
  3. Step 3: Cross multiply
    77.52x = 116.52 × 55.92
  4. Step 4: Simplify right side
    77.52x = 6,515.80
  5. Step 5: Solve for x
    x = 6,515.80/77.52
  6. Step 6: Final answer
    x = 84.05

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.