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Finding the Fourth Proportional to 254.71, 382.29 and 163.12

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Solution

The fourth proportional to 254.71, 382.29 and 163.12 is: 244.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    254.71 : 382.29 = 163.12 : x
  2. Step 2: Convert to fraction form
    254.71/382.29 = 163.12/x
  3. Step 3: Cross multiply
    254.71x = 382.29 × 163.12
  4. Step 4: Simplify right side
    254.71x = 62,359.14
  5. Step 5: Solve for x
    x = 62,359.14/254.71
  6. Step 6: Final answer
    x = 244.82

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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.