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Finding the Fourth Proportional to 604.28, 834.21 and 394.76

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Solution

The fourth proportional to 604.28, 834.21 and 394.76 is: 544.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    604.28 : 834.21 = 394.76 : x
  2. Step 2: Convert to fraction form
    604.28/834.21 = 394.76/x
  3. Step 3: Cross multiply
    604.28x = 834.21 × 394.76
  4. Step 4: Simplify right side
    604.28x = 329,308.57
  5. Step 5: Solve for x
    x = 329,308.57/604.28
  6. Step 6: Final answer
    x = 544.96

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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.