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Finding the Fourth Proportional to 604.32, 834.40 and 394.56

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Solution

The fourth proportional to 604.32, 834.40 and 394.56 is: 544.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    604.32 : 834.40 = 394.56 : x
  2. Step 2: Convert to fraction form
    604.32/834.40 = 394.56/x
  3. Step 3: Cross multiply
    604.32x = 834.40 × 394.56
  4. Step 4: Simplify right side
    604.32x = 329,220.86
  5. Step 5: Solve for x
    x = 329,220.86/604.32
  6. Step 6: Final answer
    x = 544.78

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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.