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Finding the Fourth Proportional to 181.86, 251.00 and 111.95

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Solution

The fourth proportional to 181.86, 251.00 and 111.95 is: 154.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    181.86 : 251.00 = 111.95 : x
  2. Step 2: Convert to fraction form
    181.86/251.00 = 111.95/x
  3. Step 3: Cross multiply
    181.86x = 251.00 × 111.95
  4. Step 4: Simplify right side
    181.86x = 28,098.89
  5. Step 5: Solve for x
    x = 28,098.89/181.86
  6. Step 6: Final answer
    x = 154.51

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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.