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Finding the Fourth Proportional to 254.91, 351.72 and 166.38

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Solution

The fourth proportional to 254.91, 351.72 and 166.38 is: 229.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    254.91 : 351.72 = 166.38 : x
  2. Step 2: Convert to fraction form
    254.91/351.72 = 166.38/x
  3. Step 3: Cross multiply
    254.91x = 351.72 × 166.38
  4. Step 4: Simplify right side
    254.91x = 58,516.58
  5. Step 5: Solve for x
    x = 58,516.58/254.91
  6. Step 6: Final answer
    x = 229.56

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.