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Finding the Fourth Proportional to 254.73, 382.07 and 163.85

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Solution

The fourth proportional to 254.73, 382.07 and 163.85 is: 245.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    254.73 : 382.07 = 163.85 : x
  2. Step 2: Convert to fraction form
    254.73/382.07 = 163.85/x
  3. Step 3: Cross multiply
    254.73x = 382.07 × 163.85
  4. Step 4: Simplify right side
    254.73x = 62,599.44
  5. Step 5: Solve for x
    x = 62,599.44/254.73
  6. Step 6: Final answer
    x = 245.75

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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.