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Finding the Fourth Proportional to 1,263.87, 1,743.49 and 844.09

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Solution

The fourth proportional to 1,263.87, 1,743.49 and 844.09 is: 1,164.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,263.87 : 1,743.49 = 844.09 : x
  2. Step 2: Convert to fraction form
    1,263.87/1,743.49 = 844.09/x
  3. Step 3: Cross multiply
    1,263.87x = 1,743.49 × 844.09
  4. Step 4: Simplify right side
    1,263.87x = 1,471,659.17
  5. Step 5: Solve for x
    x = 1,471,659.17/1,263.87
  6. Step 6: Final answer
    x = 1,164.41

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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.