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Finding the Fourth Proportional to 744.01, 1,028.01 and 717.73

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Solution

The fourth proportional to 744.01, 1,028.01 and 717.73 is: 991.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    744.01 : 1,028.01 = 717.73 : x
  2. Step 2: Convert to fraction form
    744.01/1,028.01 = 717.73/x
  3. Step 3: Cross multiply
    744.01x = 1,028.01 × 717.73
  4. Step 4: Simplify right side
    744.01x = 737,833.62
  5. Step 5: Solve for x
    x = 737,833.62/744.01
  6. Step 6: Final answer
    x = 991.70

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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.