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Finding the Fourth Proportional to 604.47, 834.42 and 408.25

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Solution

The fourth proportional to 604.47, 834.42 and 408.25 is: 563.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    604.47 : 834.42 = 408.25 : x
  2. Step 2: Convert to fraction form
    604.47/834.42 = 408.25/x
  3. Step 3: Cross multiply
    604.47x = 834.42 × 408.25
  4. Step 4: Simplify right side
    604.47x = 340,651.41
  5. Step 5: Solve for x
    x = 340,651.41/604.47
  6. Step 6: Final answer
    x = 563.55

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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.