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Finding the Fourth Proportional to 151.26, 227.26 and 86.30

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Solution

The fourth proportional to 151.26, 227.26 and 86.30 is: 129.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    151.26 : 227.26 = 86.30 : x
  2. Step 2: Convert to fraction form
    151.26/227.26 = 86.30/x
  3. Step 3: Cross multiply
    151.26x = 227.26 × 86.30
  4. Step 4: Simplify right side
    151.26x = 19,612.54
  5. Step 5: Solve for x
    x = 19,612.54/151.26
  6. Step 6: Final answer
    x = 129.66

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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.