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Finding the Fourth Proportional to 330.63, 495.42 and 296.20

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Solution

The fourth proportional to 330.63, 495.42 and 296.20 is: 443.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    330.63 : 495.42 = 296.20 : x
  2. Step 2: Convert to fraction form
    330.63/495.42 = 296.20/x
  3. Step 3: Cross multiply
    330.63x = 495.42 × 296.20
  4. Step 4: Simplify right side
    330.63x = 146,743.40
  5. Step 5: Solve for x
    x = 146,743.40/330.63
  6. Step 6: Final answer
    x = 443.83

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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.