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Finding the Fourth Proportional to 449.38, 620.16 and 252.94

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Solution

The fourth proportional to 449.38, 620.16 and 252.94 is: 349.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    449.38 : 620.16 = 252.94 : x
  2. Step 2: Convert to fraction form
    449.38/620.16 = 252.94/x
  3. Step 3: Cross multiply
    449.38x = 620.16 × 252.94
  4. Step 4: Simplify right side
    449.38x = 156,863.27
  5. Step 5: Solve for x
    x = 156,863.27/449.38
  6. Step 6: Final answer
    x = 349.07

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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.