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Finding the Fourth Proportional to 196.05, 270.36 and 118.38

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Solution

The fourth proportional to 196.05, 270.36 and 118.38 is: 163.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    196.05 : 270.36 = 118.38 : x
  2. Step 2: Convert to fraction form
    196.05/270.36 = 118.38/x
  3. Step 3: Cross multiply
    196.05x = 270.36 × 118.38
  4. Step 4: Simplify right side
    196.05x = 32,005.22
  5. Step 5: Solve for x
    x = 32,005.22/196.05
  6. Step 6: Final answer
    x = 163.25

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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.