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Finding the Fourth Proportional to 1,249.93, 1,872.76 and 700.75

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Solution

The fourth proportional to 1,249.93, 1,872.76 and 700.75 is: 1,049.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,249.93 : 1,872.76 = 700.75 : x
  2. Step 2: Convert to fraction form
    1,249.93/1,872.76 = 700.75/x
  3. Step 3: Cross multiply
    1,249.93x = 1,872.76 × 700.75
  4. Step 4: Simplify right side
    1,249.93x = 1,312,336.57
  5. Step 5: Solve for x
    x = 1,312,336.57/1,249.93
  6. Step 6: Final answer
    x = 1,049.93

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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.