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Finding the Fourth Proportional to 796.75, 1,189.52 and 681.24

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Solution

The fourth proportional to 796.75, 1,189.52 and 681.24 is: 1,017.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    796.75 : 1,189.52 = 681.24 : x
  2. Step 2: Convert to fraction form
    796.75/1,189.52 = 681.24/x
  3. Step 3: Cross multiply
    796.75x = 1,189.52 × 681.24
  4. Step 4: Simplify right side
    796.75x = 810,348.60
  5. Step 5: Solve for x
    x = 810,348.60/796.75
  6. Step 6: Final answer
    x = 1,017.07

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.