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Finding the Fourth Proportional to 1,227.82, 1,694.64 and 834.97

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Solution

The fourth proportional to 1,227.82, 1,694.64 and 834.97 is: 1,152.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,227.82 : 1,694.64 = 834.97 : x
  2. Step 2: Convert to fraction form
    1,227.82/1,694.64 = 834.97/x
  3. Step 3: Cross multiply
    1,227.82x = 1,694.64 × 834.97
  4. Step 4: Simplify right side
    1,227.82x = 1,414,973.56
  5. Step 5: Solve for x
    x = 1,414,973.56/1,227.82
  6. Step 6: Final answer
    x = 1,152.43

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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.