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Finding the Fourth Proportional to 127.26, 174.09 and 126.94

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Solution

The fourth proportional to 127.26, 174.09 and 126.94 is: 173.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    127.26 : 174.09 = 126.94 : x
  2. Step 2: Convert to fraction form
    127.26/174.09 = 126.94/x
  3. Step 3: Cross multiply
    127.26x = 174.09 × 126.94
  4. Step 4: Simplify right side
    127.26x = 22,098.98
  5. Step 5: Solve for x
    x = 22,098.98/127.26
  6. Step 6: Final answer
    x = 173.65

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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.