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Finding the Fourth Proportional to 1,249.94, 1,722.62 and 1,002.08

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Solution

The fourth proportional to 1,249.94, 1,722.62 and 1,002.08 is: 1,381.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,249.94 : 1,722.62 = 1,002.08 : x
  2. Step 2: Convert to fraction form
    1,249.94/1,722.62 = 1,002.08/x
  3. Step 3: Cross multiply
    1,249.94x = 1,722.62 × 1,002.08
  4. Step 4: Simplify right side
    1,249.94x = 1,726,203.05
  5. Step 5: Solve for x
    x = 1,726,203.05/1,249.94
  6. Step 6: Final answer
    x = 1,381.03

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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.