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Finding the Fourth Proportional to 127.60, 177.29 and 126.34

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Solution

The fourth proportional to 127.60, 177.29 and 126.34 is: 175.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    127.60 : 177.29 = 126.34 : x
  2. Step 2: Convert to fraction form
    127.60/177.29 = 126.34/x
  3. Step 3: Cross multiply
    127.60x = 177.29 × 126.34
  4. Step 4: Simplify right side
    127.60x = 22,398.82
  5. Step 5: Solve for x
    x = 22,398.82/127.60
  6. Step 6: Final answer
    x = 175.54

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Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.