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Finding the Fourth Proportional to 92.75, 126.90 and 92.37

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Solution

The fourth proportional to 92.75, 126.90 and 92.37 is: 126.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    92.75 : 126.90 = 92.37 : x
  2. Step 2: Convert to fraction form
    92.75/126.90 = 92.37/x
  3. Step 3: Cross multiply
    92.75x = 126.90 × 92.37
  4. Step 4: Simplify right side
    92.75x = 11,721.75
  5. Step 5: Solve for x
    x = 11,721.75/92.75
  6. Step 6: Final answer
    x = 126.38

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.