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Finding the Fourth Proportional to 221.60, 306.24 and 182.20

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Solution

The fourth proportional to 221.60, 306.24 and 182.20 is: 251.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    221.60 : 306.24 = 182.20 : x
  2. Step 2: Convert to fraction form
    221.60/306.24 = 182.20/x
  3. Step 3: Cross multiply
    221.60x = 306.24 × 182.20
  4. Step 4: Simplify right side
    221.60x = 55,796.93
  5. Step 5: Solve for x
    x = 55,796.93/221.60
  6. Step 6: Final answer
    x = 251.79

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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.