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Finding the Fourth Proportional to 867.27, 1,196.97 and 552.68

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Solution

The fourth proportional to 867.27, 1,196.97 and 552.68 is: 762.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    867.27 : 1,196.97 = 552.68 : x
  2. Step 2: Convert to fraction form
    867.27/1,196.97 = 552.68/x
  3. Step 3: Cross multiply
    867.27x = 1,196.97 × 552.68
  4. Step 4: Simplify right side
    867.27x = 661,535.39
  5. Step 5: Solve for x
    x = 661,535.39/867.27
  6. Step 6: Final answer
    x = 762.78

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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.