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Finding the Fourth Proportional to 330.91, 494.12 and 296.28

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Solution

The fourth proportional to 330.91, 494.12 and 296.28 is: 442.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    330.91 : 494.12 = 296.28 : x
  2. Step 2: Convert to fraction form
    330.91/494.12 = 296.28/x
  3. Step 3: Cross multiply
    330.91x = 494.12 × 296.28
  4. Step 4: Simplify right side
    330.91x = 146,398.61
  5. Step 5: Solve for x
    x = 146,398.61/330.91
  6. Step 6: Final answer
    x = 442.42

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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.