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Finding the Fourth Proportional to 239.29, 356.47 and 227.41

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Solution

The fourth proportional to 239.29, 356.47 and 227.41 is: 338.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    239.29 : 356.47 = 227.41 : x
  2. Step 2: Convert to fraction form
    239.29/356.47 = 227.41/x
  3. Step 3: Cross multiply
    239.29x = 356.47 × 227.41
  4. Step 4: Simplify right side
    239.29x = 81,063.38
  5. Step 5: Solve for x
    x = 81,063.38/239.29
  6. Step 6: Final answer
    x = 338.77

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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.