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Finding the Fourth Proportional to 449.67, 674.55 and 161.13

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Solution

The fourth proportional to 449.67, 674.55 and 161.13 is: 241.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    449.67 : 674.55 = 161.13 : x
  2. Step 2: Convert to fraction form
    449.67/674.55 = 161.13/x
  3. Step 3: Cross multiply
    449.67x = 674.55 × 161.13
  4. Step 4: Simplify right side
    449.67x = 108,690.24
  5. Step 5: Solve for x
    x = 108,690.24/449.67
  6. Step 6: Final answer
    x = 241.71

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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.