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Finding the Fourth Proportional to 382.39, 573.74 and 151.43

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Solution

The fourth proportional to 382.39, 573.74 and 151.43 is: 227.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    382.39 : 573.74 = 151.43 : x
  2. Step 2: Convert to fraction form
    382.39/573.74 = 151.43/x
  3. Step 3: Cross multiply
    382.39x = 573.74 × 151.43
  4. Step 4: Simplify right side
    382.39x = 86,882.13
  5. Step 5: Solve for x
    x = 86,882.13/382.39
  6. Step 6: Final answer
    x = 227.21

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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.