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Finding the Fourth Proportional to 363.11, 543.68 and 339.42

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Solution

The fourth proportional to 363.11, 543.68 and 339.42 is: 508.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    363.11 : 543.68 = 339.42 : x
  2. Step 2: Convert to fraction form
    363.11/543.68 = 339.42/x
  3. Step 3: Cross multiply
    363.11x = 543.68 × 339.42
  4. Step 4: Simplify right side
    363.11x = 184,534.17
  5. Step 5: Solve for x
    x = 184,534.17/363.11
  6. Step 6: Final answer
    x = 508.20

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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.