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Finding the Fourth Proportional to 363.60, 501.08 and 280.96

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Solution

The fourth proportional to 363.60, 501.08 and 280.96 is: 387.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    363.60 : 501.08 = 280.96 : x
  2. Step 2: Convert to fraction form
    363.60/501.08 = 280.96/x
  3. Step 3: Cross multiply
    363.60x = 501.08 × 280.96
  4. Step 4: Simplify right side
    363.60x = 140,783.44
  5. Step 5: Solve for x
    x = 140,783.44/363.60
  6. Step 6: Final answer
    x = 387.19

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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.