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Finding the Fourth Proportional to 254.90, 382.21 and 173.83

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Solution

The fourth proportional to 254.90, 382.21 and 173.83 is: 260.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    254.90 : 382.21 = 173.83 : x
  2. Step 2: Convert to fraction form
    254.90/382.21 = 173.83/x
  3. Step 3: Cross multiply
    254.90x = 382.21 × 173.83
  4. Step 4: Simplify right side
    254.90x = 66,439.56
  5. Step 5: Solve for x
    x = 66,439.56/254.90
  6. Step 6: Final answer
    x = 260.65

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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.