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Finding the Fourth Proportional to 227.76, 314.26 and 129.52

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Solution

The fourth proportional to 227.76, 314.26 and 129.52 is: 178.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    227.76 : 314.26 = 129.52 : x
  2. Step 2: Convert to fraction form
    227.76/314.26 = 129.52/x
  3. Step 3: Cross multiply
    227.76x = 314.26 × 129.52
  4. Step 4: Simplify right side
    227.76x = 40,702.96
  5. Step 5: Solve for x
    x = 40,702.96/227.76
  6. Step 6: Final answer
    x = 178.71

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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.