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Finding the Fourth Proportional to 186.97, 258.03 and 108.26

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Solution

The fourth proportional to 186.97, 258.03 and 108.26 is: 149.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    186.97 : 258.03 = 108.26 : x
  2. Step 2: Convert to fraction form
    186.97/258.03 = 108.26/x
  3. Step 3: Cross multiply
    186.97x = 258.03 × 108.26
  4. Step 4: Simplify right side
    186.97x = 27,934.33
  5. Step 5: Solve for x
    x = 27,934.33/186.97
  6. Step 6: Final answer
    x = 149.41

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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.