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Finding the Fourth Proportional to 181.85, 272.21 and 116.61

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Solution

The fourth proportional to 181.85, 272.21 and 116.61 is: 174.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    181.85 : 272.21 = 116.61 : x
  2. Step 2: Convert to fraction form
    181.85/272.21 = 116.61/x
  3. Step 3: Cross multiply
    181.85x = 272.21 × 116.61
  4. Step 4: Simplify right side
    181.85x = 31,741.83
  5. Step 5: Solve for x
    x = 31,741.83/181.85
  6. Step 6: Final answer
    x = 174.55

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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.