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Finding the Fourth Proportional to 181.87, 251.17 and 149.06

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Solution

The fourth proportional to 181.87, 251.17 and 149.06 is: 205.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    181.87 : 251.17 = 149.06 : x
  2. Step 2: Convert to fraction form
    181.87/251.17 = 149.06/x
  3. Step 3: Cross multiply
    181.87x = 251.17 × 149.06
  4. Step 4: Simplify right side
    181.87x = 37,439.66
  5. Step 5: Solve for x
    x = 37,439.66/181.87
  6. Step 6: Final answer
    x = 205.86

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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.