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Finding the Fourth Proportional to 604.31, 834.71 and 447.17

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Solution

The fourth proportional to 604.31, 834.71 and 447.17 is: 617.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    604.31 : 834.71 = 447.17 : x
  2. Step 2: Convert to fraction form
    604.31/834.71 = 447.17/x
  3. Step 3: Cross multiply
    604.31x = 834.71 × 447.17
  4. Step 4: Simplify right side
    604.31x = 373,250.86
  5. Step 5: Solve for x
    x = 373,250.86/604.31
  6. Step 6: Final answer
    x = 617.65

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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.