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Finding the Fourth Proportional to 238.61, 358.18 and 225.11

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Solution

The fourth proportional to 238.61, 358.18 and 225.11 is: 337.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    238.61 : 358.18 = 225.11 : x
  2. Step 2: Convert to fraction form
    238.61/358.18 = 225.11/x
  3. Step 3: Cross multiply
    238.61x = 358.18 × 225.11
  4. Step 4: Simplify right side
    238.61x = 80,628.11
  5. Step 5: Solve for x
    x = 80,628.11/238.61
  6. Step 6: Final answer
    x = 337.91

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.