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Finding the Fourth Proportional to 681.44, 941.04 and 516.80

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Solution

The fourth proportional to 681.44, 941.04 and 516.80 is: 713.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    681.44 : 941.04 = 516.80 : x
  2. Step 2: Convert to fraction form
    681.44/941.04 = 516.80/x
  3. Step 3: Cross multiply
    681.44x = 941.04 × 516.80
  4. Step 4: Simplify right side
    681.44x = 486,329.47
  5. Step 5: Solve for x
    x = 486,329.47/681.44
  6. Step 6: Final answer
    x = 713.68

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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.