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Finding the Fourth Proportional to 447.42, 617.39 and 250.90

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Solution

The fourth proportional to 447.42, 617.39 and 250.90 is: 346.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    447.42 : 617.39 = 250.90 : x
  2. Step 2: Convert to fraction form
    447.42/617.39 = 250.90/x
  3. Step 3: Cross multiply
    447.42x = 617.39 × 250.90
  4. Step 4: Simplify right side
    447.42x = 154,901.29
  5. Step 5: Solve for x
    x = 154,901.29/447.42
  6. Step 6: Final answer
    x = 346.21

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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.