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Finding the Fourth Proportional to 382.62, 573.50 and 220.20

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Solution

The fourth proportional to 382.62, 573.50 and 220.20 is: 330.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    382.62 : 573.50 = 220.20 : x
  2. Step 2: Convert to fraction form
    382.62/573.50 = 220.20/x
  3. Step 3: Cross multiply
    382.62x = 573.50 × 220.20
  4. Step 4: Simplify right side
    382.62x = 126,284.70
  5. Step 5: Solve for x
    x = 126,284.70/382.62
  6. Step 6: Final answer
    x = 330.05

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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.