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Finding the Fourth Proportional to 181.96, 251.11 and 103.29

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Solution

The fourth proportional to 181.96, 251.11 and 103.29 is: 142.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    181.96 : 251.11 = 103.29 : x
  2. Step 2: Convert to fraction form
    181.96/251.11 = 103.29/x
  3. Step 3: Cross multiply
    181.96x = 251.11 × 103.29
  4. Step 4: Simplify right side
    181.96x = 25,937.15
  5. Step 5: Solve for x
    x = 25,937.15/181.96
  6. Step 6: Final answer
    x = 142.54

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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.