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Finding the Fourth Proportional to 126.83, 188.91 and 125.25

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Solution

The fourth proportional to 126.83, 188.91 and 125.25 is: 186.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    126.83 : 188.91 = 125.25 : x
  2. Step 2: Convert to fraction form
    126.83/188.91 = 125.25/x
  3. Step 3: Cross multiply
    126.83x = 188.91 × 125.25
  4. Step 4: Simplify right side
    126.83x = 23,660.35
  5. Step 5: Solve for x
    x = 23,660.35/126.83
  6. Step 6: Final answer
    x = 186.56

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.