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Finding the Fourth Proportional to 1,349.42, 1,862.23 and 759.97

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Solution

The fourth proportional to 1,349.42, 1,862.23 and 759.97 is: 1,048.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,349.42 : 1,862.23 = 759.97 : x
  2. Step 2: Convert to fraction form
    1,349.42/1,862.23 = 759.97/x
  3. Step 3: Cross multiply
    1,349.42x = 1,862.23 × 759.97
  4. Step 4: Simplify right side
    1,349.42x = 1,415,238.93
  5. Step 5: Solve for x
    x = 1,415,238.93/1,349.42
  6. Step 6: Final answer
    x = 1,048.78

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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.