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Finding the Fourth Proportional to 626.54, 865.45 and 480.97

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Solution

The fourth proportional to 626.54, 865.45 and 480.97 is: 664.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    626.54 : 865.45 = 480.97 : x
  2. Step 2: Convert to fraction form
    626.54/865.45 = 480.97/x
  3. Step 3: Cross multiply
    626.54x = 865.45 × 480.97
  4. Step 4: Simplify right side
    626.54x = 416,255.49
  5. Step 5: Solve for x
    x = 416,255.49/626.54
  6. Step 6: Final answer
    x = 664.37

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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.