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Finding the Fourth Proportional to 196.62, 295.06 and 105.38

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Solution

The fourth proportional to 196.62, 295.06 and 105.38 is: 158.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    196.62 : 295.06 = 105.38 : x
  2. Step 2: Convert to fraction form
    196.62/295.06 = 105.38/x
  3. Step 3: Cross multiply
    196.62x = 295.06 × 105.38
  4. Step 4: Simplify right side
    196.62x = 31,093.42
  5. Step 5: Solve for x
    x = 31,093.42/196.62
  6. Step 6: Final answer
    x = 158.14

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.