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Finding the Fourth Proportional to 449.96, 620.97 and 250.82

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Solution

The fourth proportional to 449.96, 620.97 and 250.82 is: 346.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    449.96 : 620.97 = 250.82 : x
  2. Step 2: Convert to fraction form
    449.96/620.97 = 250.82/x
  3. Step 3: Cross multiply
    449.96x = 620.97 × 250.82
  4. Step 4: Simplify right side
    449.96x = 155,751.70
  5. Step 5: Solve for x
    x = 155,751.70/449.96
  6. Step 6: Final answer
    x = 346.15

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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.