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Finding the Fourth Proportional to 1,251.34, 1,726.84 and 727.36

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Solution

The fourth proportional to 1,251.34, 1,726.84 and 727.36 is: 1,003.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,251.34 : 1,726.84 = 727.36 : x
  2. Step 2: Convert to fraction form
    1,251.34/1,726.84 = 727.36/x
  3. Step 3: Cross multiply
    1,251.34x = 1,726.84 × 727.36
  4. Step 4: Simplify right side
    1,251.34x = 1,256,034.34
  5. Step 5: Solve for x
    x = 1,256,034.34/1,251.34
  6. Step 6: Final answer
    x = 1,003.75

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1.5x scale

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.