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Finding the Fourth Proportional to 132.17, 196.95 and 127.82

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Solution

The fourth proportional to 132.17, 196.95 and 127.82 is: 190.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    132.17 : 196.95 = 127.82 : x
  2. Step 2: Convert to fraction form
    132.17/196.95 = 127.82/x
  3. Step 3: Cross multiply
    132.17x = 196.95 × 127.82
  4. Step 4: Simplify right side
    132.17x = 25,173.16
  5. Step 5: Solve for x
    x = 25,173.16/132.17
  6. Step 6: Final answer
    x = 190.47

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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.