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Finding the Fourth Proportional to 801.23, 1,104.49 and 626.27

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Solution

The fourth proportional to 801.23, 1,104.49 and 626.27 is: 863.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    801.23 : 1,104.49 = 626.27 : x
  2. Step 2: Convert to fraction form
    801.23/1,104.49 = 626.27/x
  3. Step 3: Cross multiply
    801.23x = 1,104.49 × 626.27
  4. Step 4: Simplify right side
    801.23x = 691,710.15
  5. Step 5: Solve for x
    x = 691,710.15/801.23
  6. Step 6: Final answer
    x = 863.31

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1.5x scale

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.