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Finding the Fourth Proportional to 1,255.03, 1,731.91 and 695.49

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Solution

The fourth proportional to 1,255.03, 1,731.91 and 695.49 is: 959.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,255.03 : 1,731.91 = 695.49 : x
  2. Step 2: Convert to fraction form
    1,255.03/1,731.91 = 695.49/x
  3. Step 3: Cross multiply
    1,255.03x = 1,731.91 × 695.49
  4. Step 4: Simplify right side
    1,255.03x = 1,204,517.20
  5. Step 5: Solve for x
    x = 1,204,517.20/1,255.03
  6. Step 6: Final answer
    x = 959.75

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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.