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Finding the Fourth Proportional to 604.39, 834.07 and 394.70

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Solution

The fourth proportional to 604.39, 834.07 and 394.70 is: 544.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    604.39 : 834.07 = 394.70 : x
  2. Step 2: Convert to fraction form
    604.39/834.07 = 394.70/x
  3. Step 3: Cross multiply
    604.39x = 834.07 × 394.70
  4. Step 4: Simplify right side
    604.39x = 329,207.43
  5. Step 5: Solve for x
    x = 329,207.43/604.39
  6. Step 6: Final answer
    x = 544.69

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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.