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Finding the Fourth Proportional to 254.96, 382.30 and 168.34

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Solution

The fourth proportional to 254.96, 382.30 and 168.34 is: 252.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    254.96 : 382.30 = 168.34 : x
  2. Step 2: Convert to fraction form
    254.96/382.30 = 168.34/x
  3. Step 3: Cross multiply
    254.96x = 382.30 × 168.34
  4. Step 4: Simplify right side
    254.96x = 64,355.01
  5. Step 5: Solve for x
    x = 64,355.01/254.96
  6. Step 6: Final answer
    x = 252.42

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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.