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Finding the Fourth Proportional to 1,229.73, 1,844.94 and 613.26

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Solution

The fourth proportional to 1,229.73, 1,844.94 and 613.26 is: 920.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,229.73 : 1,844.94 = 613.26 : x
  2. Step 2: Convert to fraction form
    1,229.73/1,844.94 = 613.26/x
  3. Step 3: Cross multiply
    1,229.73x = 1,844.94 × 613.26
  4. Step 4: Simplify right side
    1,229.73x = 1,131,427.90
  5. Step 5: Solve for x
    x = 1,131,427.90/1,229.73
  6. Step 6: Final answer
    x = 920.06

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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.