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Finding the Fourth Proportional to 1,083.74, 1,494.12 and 817.04

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Solution

The fourth proportional to 1,083.74, 1,494.12 and 817.04 is: 1,126.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,083.74 : 1,494.12 = 817.04 : x
  2. Step 2: Convert to fraction form
    1,083.74/1,494.12 = 817.04/x
  3. Step 3: Cross multiply
    1,083.74x = 1,494.12 × 817.04
  4. Step 4: Simplify right side
    1,083.74x = 1,220,755.80
  5. Step 5: Solve for x
    x = 1,220,755.80/1,083.74
  6. Step 6: Final answer
    x = 1,126.43

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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.