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Finding the Fourth Proportional to 325.73, 449.34 and 220.85

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Solution

The fourth proportional to 325.73, 449.34 and 220.85 is: 304.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    325.73 : 449.34 = 220.85 : x
  2. Step 2: Convert to fraction form
    325.73/449.34 = 220.85/x
  3. Step 3: Cross multiply
    325.73x = 449.34 × 220.85
  4. Step 4: Simplify right side
    325.73x = 99,236.74
  5. Step 5: Solve for x
    x = 99,236.74/325.73
  6. Step 6: Final answer
    x = 304.66

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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.