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Finding the Fourth Proportional to 757.15, 1,044.92 and 425.60

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Solution

The fourth proportional to 757.15, 1,044.92 and 425.60 is: 587.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    757.15 : 1,044.92 = 425.60 : x
  2. Step 2: Convert to fraction form
    757.15/1,044.92 = 425.60/x
  3. Step 3: Cross multiply
    757.15x = 1,044.92 × 425.60
  4. Step 4: Simplify right side
    757.15x = 444,717.95
  5. Step 5: Solve for x
    x = 444,717.95/757.15
  6. Step 6: Final answer
    x = 587.36

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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.