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Finding the Fourth Proportional to 797.92, 1,191.58 and 681.14

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Solution

The fourth proportional to 797.92, 1,191.58 and 681.14 is: 1,017.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    797.92 : 1,191.58 = 681.14 : x
  2. Step 2: Convert to fraction form
    797.92/1,191.58 = 681.14/x
  3. Step 3: Cross multiply
    797.92x = 1,191.58 × 681.14
  4. Step 4: Simplify right side
    797.92x = 811,634.08
  5. Step 5: Solve for x
    x = 811,634.08/797.92
  6. Step 6: Final answer
    x = 1,017.19

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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.