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Finding the Fourth Proportional to 382.82, 574.32 and 151.71

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Solution

The fourth proportional to 382.82, 574.32 and 151.71 is: 227.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    382.82 : 574.32 = 151.71 : x
  2. Step 2: Convert to fraction form
    382.82/574.32 = 151.71/x
  3. Step 3: Cross multiply
    382.82x = 574.32 × 151.71
  4. Step 4: Simplify right side
    382.82x = 87,130.09
  5. Step 5: Solve for x
    x = 87,130.09/382.82
  6. Step 6: Final answer
    x = 227.60

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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.