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Finding the Fourth Proportional to 382.80, 574.08 and 151.92

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Solution

The fourth proportional to 382.80, 574.08 and 151.92 is: 227.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    382.80 : 574.08 = 151.92 : x
  2. Step 2: Convert to fraction form
    382.80/574.08 = 151.92/x
  3. Step 3: Cross multiply
    382.80x = 574.08 × 151.92
  4. Step 4: Simplify right side
    382.80x = 87,214.23
  5. Step 5: Solve for x
    x = 87,214.23/382.80
  6. Step 6: Final answer
    x = 227.83

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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.