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Finding the Fourth Proportional to 681.46, 938.52 and 637.54

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Solution

The fourth proportional to 681.46, 938.52 and 637.54 is: 878.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    681.46 : 938.52 = 637.54 : x
  2. Step 2: Convert to fraction form
    681.46/938.52 = 637.54/x
  3. Step 3: Cross multiply
    681.46x = 938.52 × 637.54
  4. Step 4: Simplify right side
    681.46x = 598,344.04
  5. Step 5: Solve for x
    x = 598,344.04/681.46
  6. Step 6: Final answer
    x = 878.03

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1.5x scale

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.