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Finding the Fourth Proportional to 196.50, 271.08 and 134.40

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Solution

The fourth proportional to 196.50, 271.08 and 134.40 is: 185.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    196.50 : 271.08 = 134.40 : x
  2. Step 2: Convert to fraction form
    196.50/271.08 = 134.40/x
  3. Step 3: Cross multiply
    196.50x = 271.08 × 134.40
  4. Step 4: Simplify right side
    196.50x = 36,433.15
  5. Step 5: Solve for x
    x = 36,433.15/196.50
  6. Step 6: Final answer
    x = 185.41

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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.