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Finding the Fourth Proportional to 196.45, 271.13 and 113.54

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Solution

The fourth proportional to 196.45, 271.13 and 113.54 is: 156.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    196.45 : 271.13 = 113.54 : x
  2. Step 2: Convert to fraction form
    196.45/271.13 = 113.54/x
  3. Step 3: Cross multiply
    196.45x = 271.13 × 113.54
  4. Step 4: Simplify right side
    196.45x = 30,784.10
  5. Step 5: Solve for x
    x = 30,784.10/196.45
  6. Step 6: Final answer
    x = 156.70

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