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Finding the Fourth Proportional to 96.29, 132.81 and 84.61

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Solution

The fourth proportional to 96.29, 132.81 and 84.61 is: 116.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    96.29 : 132.81 = 84.61 : x
  2. Step 2: Convert to fraction form
    96.29/132.81 = 84.61/x
  3. Step 3: Cross multiply
    96.29x = 132.81 × 84.61
  4. Step 4: Simplify right side
    96.29x = 11,237.05
  5. Step 5: Solve for x
    x = 11,237.05/96.29
  6. Step 6: Final answer
    x = 116.70

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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.