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Finding the Fourth Proportional to 1,241.91, 1,713.86 and 744.57

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Solution

The fourth proportional to 1,241.91, 1,713.86 and 744.57 is: 1,027.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,241.91 : 1,713.86 = 744.57 : x
  2. Step 2: Convert to fraction form
    1,241.91/1,713.86 = 744.57/x
  3. Step 3: Cross multiply
    1,241.91x = 1,713.86 × 744.57
  4. Step 4: Simplify right side
    1,241.91x = 1,276,085.02
  5. Step 5: Solve for x
    x = 1,276,085.02/1,241.91
  6. Step 6: Final answer
    x = 1,027.52

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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.