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Finding the Fourth Proportional to 1,226.06, 1,691.94 and 702.06

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Solution

The fourth proportional to 1,226.06, 1,691.94 and 702.06 is: 968.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,226.06 : 1,691.94 = 702.06 : x
  2. Step 2: Convert to fraction form
    1,226.06/1,691.94 = 702.06/x
  3. Step 3: Cross multiply
    1,226.06x = 1,691.94 × 702.06
  4. Step 4: Simplify right side
    1,226.06x = 1,187,843.40
  5. Step 5: Solve for x
    x = 1,187,843.40/1,226.06
  6. Step 6: Final answer
    x = 968.83

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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.