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Finding the Fourth Proportional to 866.90, 1,195.97 and 552.02

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Solution

The fourth proportional to 866.90, 1,195.97 and 552.02 is: 761.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    866.90 : 1,195.97 = 552.02 : x
  2. Step 2: Convert to fraction form
    866.90/1,195.97 = 552.02/x
  3. Step 3: Cross multiply
    866.90x = 1,195.97 × 552.02
  4. Step 4: Simplify right side
    866.90x = 660,190.62
  5. Step 5: Solve for x
    x = 660,190.62/866.90
  6. Step 6: Final answer
    x = 761.55

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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.