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Finding the Fourth Proportional to 960.73, 1,324.93 and 712.68

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Solution

The fourth proportional to 960.73, 1,324.93 and 712.68 is: 982.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    960.73 : 1,324.93 = 712.68 : x
  2. Step 2: Convert to fraction form
    960.73/1,324.93 = 712.68/x
  3. Step 3: Cross multiply
    960.73x = 1,324.93 × 712.68
  4. Step 4: Simplify right side
    960.73x = 944,251.11
  5. Step 5: Solve for x
    x = 944,251.11/960.73
  6. Step 6: Final answer
    x = 982.85

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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.