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Finding the Fourth Proportional to 127.98, 175.37 and 125.35

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Solution

The fourth proportional to 127.98, 175.37 and 125.35 is: 171.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    127.98 : 175.37 = 125.35 : x
  2. Step 2: Convert to fraction form
    127.98/175.37 = 125.35/x
  3. Step 3: Cross multiply
    127.98x = 175.37 × 125.35
  4. Step 4: Simplify right side
    127.98x = 21,981.56
  5. Step 5: Solve for x
    x = 21,981.56/127.98
  6. Step 6: Final answer
    x = 171.76

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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.