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Finding the Fourth Proportional to 96.60, 132.49 and 91.37

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Solution

The fourth proportional to 96.60, 132.49 and 91.37 is: 125.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    96.60 : 132.49 = 91.37 : x
  2. Step 2: Convert to fraction form
    96.60/132.49 = 91.37/x
  3. Step 3: Cross multiply
    96.60x = 132.49 × 91.37
  4. Step 4: Simplify right side
    96.60x = 12,105.61
  5. Step 5: Solve for x
    x = 12,105.61/96.60
  6. Step 6: Final answer
    x = 125.32

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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.