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Finding the Fourth Proportional to 227.31, 339.50 and 225.72

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Solution

The fourth proportional to 227.31, 339.50 and 225.72 is: 337.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    227.31 : 339.50 = 225.72 : x
  2. Step 2: Convert to fraction form
    227.31/339.50 = 225.72/x
  3. Step 3: Cross multiply
    227.31x = 339.50 × 225.72
  4. Step 4: Simplify right side
    227.31x = 76,631.94
  5. Step 5: Solve for x
    x = 76,631.94/227.31
  6. Step 6: Final answer
    x = 337.13

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.