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Finding the Fourth Proportional to 796.39, 1,194.63 and 691.39

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Solution

The fourth proportional to 796.39, 1,194.63 and 691.39 is: 1,037.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    796.39 : 1,194.63 = 691.39 : x
  2. Step 2: Convert to fraction form
    796.39/1,194.63 = 691.39/x
  3. Step 3: Cross multiply
    796.39x = 1,194.63 × 691.39
  4. Step 4: Simplify right side
    796.39x = 825,955.24
  5. Step 5: Solve for x
    x = 825,955.24/796.39
  6. Step 6: Final answer
    x = 1,037.12

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.