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Finding the Fourth Proportional to 741.28, 1,027.96 and 717.52

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Solution

The fourth proportional to 741.28, 1,027.96 and 717.52 is: 995.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    741.28 : 1,027.96 = 717.52 : x
  2. Step 2: Convert to fraction form
    741.28/1,027.96 = 717.52/x
  3. Step 3: Cross multiply
    741.28x = 1,027.96 × 717.52
  4. Step 4: Simplify right side
    741.28x = 737,581.86
  5. Step 5: Solve for x
    x = 737,581.86/741.28
  6. Step 6: Final answer
    x = 995.01

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Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.