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Finding the Fourth Proportional to 151.38, 227.96 and 113.13

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Solution

The fourth proportional to 151.38, 227.96 and 113.13 is: 170.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    151.38 : 227.96 = 113.13 : x
  2. Step 2: Convert to fraction form
    151.38/227.96 = 113.13/x
  3. Step 3: Cross multiply
    151.38x = 227.96 × 113.13
  4. Step 4: Simplify right side
    151.38x = 25,789.11
  5. Step 5: Solve for x
    x = 25,789.11/151.38
  6. Step 6: Final answer
    x = 170.36

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.