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Finding the Fourth Proportional to 227.27, 338.65 and 219.92

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Solution

The fourth proportional to 227.27, 338.65 and 219.92 is: 327.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    227.27 : 338.65 = 219.92 : x
  2. Step 2: Convert to fraction form
    227.27/338.65 = 219.92/x
  3. Step 3: Cross multiply
    227.27x = 338.65 × 219.92
  4. Step 4: Simplify right side
    227.27x = 74,473.66
  5. Step 5: Solve for x
    x = 74,473.66/227.27
  6. Step 6: Final answer
    x = 327.68

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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.