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Finding the Fourth Proportional to 1,735.97, 2,604.56 and 640.44

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Solution

The fourth proportional to 1,735.97, 2,604.56 and 640.44 is: 960.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,735.97 : 2,604.56 = 640.44 : x
  2. Step 2: Convert to fraction form
    1,735.97/2,604.56 = 640.44/x
  3. Step 3: Cross multiply
    1,735.97x = 2,604.56 × 640.44
  4. Step 4: Simplify right side
    1,735.97x = 1,668,061.20
  5. Step 5: Solve for x
    x = 1,668,061.20/1,735.97
  6. Step 6: Final answer
    x = 960.88

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.