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Finding the Fourth Proportional to 330.11, 495.01 and 193.20

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Solution

The fourth proportional to 330.11, 495.01 and 193.20 is: 289.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    330.11 : 495.01 = 193.20 : x
  2. Step 2: Convert to fraction form
    330.11/495.01 = 193.20/x
  3. Step 3: Cross multiply
    330.11x = 495.01 × 193.20
  4. Step 4: Simplify right side
    330.11x = 95,635.45
  5. Step 5: Solve for x
    x = 95,635.45/330.11
  6. Step 6: Final answer
    x = 289.71

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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.