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Finding the Fourth Proportional to 801.88, 1,107.30 and 626.92

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Solution

The fourth proportional to 801.88, 1,107.30 and 626.92 is: 865.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    801.88 : 1,107.30 = 626.92 : x
  2. Step 2: Convert to fraction form
    801.88/1,107.30 = 626.92/x
  3. Step 3: Cross multiply
    801.88x = 1,107.30 × 626.92
  4. Step 4: Simplify right side
    801.88x = 694,188.52
  5. Step 5: Solve for x
    x = 694,188.52/801.88
  6. Step 6: Final answer
    x = 865.70

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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.