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Finding the Fourth Proportional to 1,377.42, 2,062.60 and 760.44

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Solution

The fourth proportional to 1,377.42, 2,062.60 and 760.44 is: 1,138.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,377.42 : 2,062.60 = 760.44 : x
  2. Step 2: Convert to fraction form
    1,377.42/2,062.60 = 760.44/x
  3. Step 3: Cross multiply
    1,377.42x = 2,062.60 × 760.44
  4. Step 4: Simplify right side
    1,377.42x = 1,568,479.74
  5. Step 5: Solve for x
    x = 1,568,479.74/1,377.42
  6. Step 6: Final answer
    x = 1,138.71

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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.