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Finding the Fourth Proportional to 363.39, 543.72 and 217.22

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Solution

The fourth proportional to 363.39, 543.72 and 217.22 is: 325.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    363.39 : 543.72 = 217.22 : x
  2. Step 2: Convert to fraction form
    363.39/543.72 = 217.22/x
  3. Step 3: Cross multiply
    363.39x = 543.72 × 217.22
  4. Step 4: Simplify right side
    363.39x = 118,104.95
  5. Step 5: Solve for x
    x = 118,104.95/363.39
  6. Step 6: Final answer
    x = 325.01

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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.