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Finding the Fourth Proportional to 612.92, 845.16 and 520.04

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Solution

The fourth proportional to 612.92, 845.16 and 520.04 is: 717.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    612.92 : 845.16 = 520.04 : x
  2. Step 2: Convert to fraction form
    612.92/845.16 = 520.04/x
  3. Step 3: Cross multiply
    612.92x = 845.16 × 520.04
  4. Step 4: Simplify right side
    612.92x = 439,517.01
  5. Step 5: Solve for x
    x = 439,517.01/612.92
  6. Step 6: Final answer
    x = 717.09

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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.