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Finding the Fourth Proportional to 196.72, 271.60 and 134.53

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Solution

The fourth proportional to 196.72, 271.60 and 134.53 is: 185.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    196.72 : 271.60 = 134.53 : x
  2. Step 2: Convert to fraction form
    196.72/271.60 = 134.53/x
  3. Step 3: Cross multiply
    196.72x = 271.60 × 134.53
  4. Step 4: Simplify right side
    196.72x = 36,537.33
  5. Step 5: Solve for x
    x = 36,537.33/196.72
  6. Step 6: Final answer
    x = 185.74

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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.