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Finding the Fourth Proportional to 382.61, 573.74 and 272.87

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Solution

The fourth proportional to 382.61, 573.74 and 272.87 is: 409.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    382.61 : 573.74 = 272.87 : x
  2. Step 2: Convert to fraction form
    382.61/573.74 = 272.87/x
  3. Step 3: Cross multiply
    382.61x = 573.74 × 272.87
  4. Step 4: Simplify right side
    382.61x = 156,552.20
  5. Step 5: Solve for x
    x = 156,552.20/382.61
  6. Step 6: Final answer
    x = 409.17

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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.