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Finding the Fourth Proportional to 196.32, 271.36 and 167.20

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Solution

The fourth proportional to 196.32, 271.36 and 167.20 is: 231.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    196.32 : 271.36 = 167.20 : x
  2. Step 2: Convert to fraction form
    196.32/271.36 = 167.20/x
  3. Step 3: Cross multiply
    196.32x = 271.36 × 167.20
  4. Step 4: Simplify right side
    196.32x = 45,371.39
  5. Step 5: Solve for x
    x = 45,371.39/196.32
  6. Step 6: Final answer
    x = 231.11

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.