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Finding the Fourth Proportional to 330.21, 494.98 and 232.71

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Solution

The fourth proportional to 330.21, 494.98 and 232.71 is: 348.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    330.21 : 494.98 = 232.71 : x
  2. Step 2: Convert to fraction form
    330.21/494.98 = 232.71/x
  3. Step 3: Cross multiply
    330.21x = 494.98 × 232.71
  4. Step 4: Simplify right side
    330.21x = 115,186.94
  5. Step 5: Solve for x
    x = 115,186.94/330.21
  6. Step 6: Final answer
    x = 348.82

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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.