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Finding the Fourth Proportional to 447.87, 674.24 and 403.22

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Solution

The fourth proportional to 447.87, 674.24 and 403.22 is: 607.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    447.87 : 674.24 = 403.22 : x
  2. Step 2: Convert to fraction form
    447.87/674.24 = 403.22/x
  3. Step 3: Cross multiply
    447.87x = 674.24 × 403.22
  4. Step 4: Simplify right side
    447.87x = 271,869.75
  5. Step 5: Solve for x
    x = 271,869.75/447.87
  6. Step 6: Final answer
    x = 607.03

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.