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Finding the Fourth Proportional to 151.52, 209.12 and 96.28

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Solution

The fourth proportional to 151.52, 209.12 and 96.28 is: 132.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    151.52 : 209.12 = 96.28 : x
  2. Step 2: Convert to fraction form
    151.52/209.12 = 96.28/x
  3. Step 3: Cross multiply
    151.52x = 209.12 × 96.28
  4. Step 4: Simplify right side
    151.52x = 20,134.07
  5. Step 5: Solve for x
    x = 20,134.07/151.52
  6. Step 6: Final answer
    x = 132.88

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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.