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Finding the Fourth Proportional to 227.17, 340.31 and 149.90

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Solution

The fourth proportional to 227.17, 340.31 and 149.90 is: 224.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    227.17 : 340.31 = 149.90 : x
  2. Step 2: Convert to fraction form
    227.17/340.31 = 149.90/x
  3. Step 3: Cross multiply
    227.17x = 340.31 × 149.90
  4. Step 4: Simplify right side
    227.17x = 51,013.27
  5. Step 5: Solve for x
    x = 51,013.27/227.17
  6. Step 6: Final answer
    x = 224.56

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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.