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Finding the Fourth Proportional to 1,375.27, 2,058.62 and 749.00

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Solution

The fourth proportional to 1,375.27, 2,058.62 and 749.00 is: 1,121.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,375.27 : 2,058.62 = 749.00 : x
  2. Step 2: Convert to fraction form
    1,375.27/2,058.62 = 749.00/x
  3. Step 3: Cross multiply
    1,375.27x = 2,058.62 × 749.00
  4. Step 4: Simplify right side
    1,375.27x = 1,541,907.78
  5. Step 5: Solve for x
    x = 1,541,907.78/1,375.27
  6. Step 6: Final answer
    x = 1,121.17

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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.