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Finding the Fourth Proportional to 512.97, 712.07 and 480.57

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Solution

The fourth proportional to 512.97, 712.07 and 480.57 is: 667.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    512.97 : 712.07 = 480.57 : x
  2. Step 2: Convert to fraction form
    512.97/712.07 = 480.57/x
  3. Step 3: Cross multiply
    512.97x = 712.07 × 480.57
  4. Step 4: Simplify right side
    512.97x = 342,200.68
  5. Step 5: Solve for x
    x = 342,200.68/512.97
  6. Step 6: Final answer
    x = 667.10

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Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.