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Finding the Fourth Proportional to 238.35, 355.11 and 226.73

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Solution

The fourth proportional to 238.35, 355.11 and 226.73 is: 337.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    238.35 : 355.11 = 226.73 : x
  2. Step 2: Convert to fraction form
    238.35/355.11 = 226.73/x
  3. Step 3: Cross multiply
    238.35x = 355.11 × 226.73
  4. Step 4: Simplify right side
    238.35x = 80,512.31
  5. Step 5: Solve for x
    x = 80,512.31/238.35
  6. Step 6: Final answer
    x = 337.79

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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.