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Finding the Fourth Proportional to 2,249.16, 3,373.97 and 689.15

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Solution

The fourth proportional to 2,249.16, 3,373.97 and 689.15 is: 1,033.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,249.16 : 3,373.97 = 689.15 : x
  2. Step 2: Convert to fraction form
    2,249.16/3,373.97 = 689.15/x
  3. Step 3: Cross multiply
    2,249.16x = 3,373.97 × 689.15
  4. Step 4: Simplify right side
    2,249.16x = 2,325,151.11
  5. Step 5: Solve for x
    x = 2,325,151.11/2,249.16
  6. Step 6: Final answer
    x = 1,033.79

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.