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Finding the Fourth Proportional to 1,034.29, 1,425.92 and 739.05

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Solution

The fourth proportional to 1,034.29, 1,425.92 and 739.05 is: 1,018.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,034.29 : 1,425.92 = 739.05 : x
  2. Step 2: Convert to fraction form
    1,034.29/1,425.92 = 739.05/x
  3. Step 3: Cross multiply
    1,034.29x = 1,425.92 × 739.05
  4. Step 4: Simplify right side
    1,034.29x = 1,053,826.18
  5. Step 5: Solve for x
    x = 1,053,826.18/1,034.29
  6. Step 6: Final answer
    x = 1,018.89

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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.