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Finding the Fourth Proportional to 604.80, 834.40 and 447.04

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Solution

The fourth proportional to 604.80, 834.40 and 447.04 is: 616.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    604.80 : 834.40 = 447.04 : x
  2. Step 2: Convert to fraction form
    604.80/834.40 = 447.04/x
  3. Step 3: Cross multiply
    604.80x = 834.40 × 447.04
  4. Step 4: Simplify right side
    604.80x = 373,010.18
  5. Step 5: Solve for x
    x = 373,010.18/604.80
  6. Step 6: Final answer
    x = 616.75

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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.