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Finding the Fourth Proportional to 363.80, 499.21 and 330.92

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Solution

The fourth proportional to 363.80, 499.21 and 330.92 is: 454.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    363.80 : 499.21 = 330.92 : x
  2. Step 2: Convert to fraction form
    363.80/499.21 = 330.92/x
  3. Step 3: Cross multiply
    363.80x = 499.21 × 330.92
  4. Step 4: Simplify right side
    363.80x = 165,198.57
  5. Step 5: Solve for x
    x = 165,198.57/363.80
  6. Step 6: Final answer
    x = 454.09

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.