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Finding the Fourth Proportional to 604.92, 905.38 and 520.44

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Solution

The fourth proportional to 604.92, 905.38 and 520.44 is: 778.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    604.92 : 905.38 = 520.44 : x
  2. Step 2: Convert to fraction form
    604.92/905.38 = 520.44/x
  3. Step 3: Cross multiply
    604.92x = 905.38 × 520.44
  4. Step 4: Simplify right side
    604.92x = 471,195.97
  5. Step 5: Solve for x
    x = 471,195.97/604.92
  6. Step 6: Final answer
    x = 778.94

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.