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Finding the Fourth Proportional to 960.52, 1,323.92 and 680.39

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Solution

The fourth proportional to 960.52, 1,323.92 and 680.39 is: 937.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    960.52 : 1,323.92 = 680.39 : x
  2. Step 2: Convert to fraction form
    960.52/1,323.92 = 680.39/x
  3. Step 3: Cross multiply
    960.52x = 1,323.92 × 680.39
  4. Step 4: Simplify right side
    960.52x = 900,780.33
  5. Step 5: Solve for x
    x = 900,780.33/960.52
  6. Step 6: Final answer
    x = 937.81

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1.5x scale

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.