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Finding the Fourth Proportional to 1,251.89, 1,726.64 and 754.01

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Solution

The fourth proportional to 1,251.89, 1,726.64 and 754.01 is: 1,039.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,251.89 : 1,726.64 = 754.01 : x
  2. Step 2: Convert to fraction form
    1,251.89/1,726.64 = 754.01/x
  3. Step 3: Cross multiply
    1,251.89x = 1,726.64 × 754.01
  4. Step 4: Simplify right side
    1,251.89x = 1,301,900.73
  5. Step 5: Solve for x
    x = 1,301,900.73/1,251.89
  6. Step 6: Final answer
    x = 1,039.95

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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.