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Finding the Fourth Proportional to 227.27, 339.23 and 211.61

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Solution

The fourth proportional to 227.27, 339.23 and 211.61 is: 315.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    227.27 : 339.23 = 211.61 : x
  2. Step 2: Convert to fraction form
    227.27/339.23 = 211.61/x
  3. Step 3: Cross multiply
    227.27x = 339.23 × 211.61
  4. Step 4: Simplify right side
    227.27x = 71,781.71
  5. Step 5: Solve for x
    x = 71,781.71/227.27
  6. Step 6: Final answer
    x = 315.85

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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.