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Finding the Fourth Proportional to 363.20, 501.44 and 280.17

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Solution

The fourth proportional to 363.20, 501.44 and 280.17 is: 386.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    363.20 : 501.44 = 280.17 : x
  2. Step 2: Convert to fraction form
    363.20/501.44 = 280.17/x
  3. Step 3: Cross multiply
    363.20x = 501.44 × 280.17
  4. Step 4: Simplify right side
    363.20x = 140,487.04
  5. Step 5: Solve for x
    x = 140,487.04/363.20
  6. Step 6: Final answer
    x = 386.81

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.