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Finding the Fourth Proportional to 238.93, 358.49 and 229.61

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Solution

The fourth proportional to 238.93, 358.49 and 229.61 is: 344.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    238.93 : 358.49 = 229.61 : x
  2. Step 2: Convert to fraction form
    238.93/358.49 = 229.61/x
  3. Step 3: Cross multiply
    238.93x = 358.49 × 229.61
  4. Step 4: Simplify right side
    238.93x = 82,312.89
  5. Step 5: Solve for x
    x = 82,312.89/238.93
  6. Step 6: Final answer
    x = 344.51

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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.