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Finding the Fourth Proportional to 196.56, 272.38 and 192.08

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Solution

The fourth proportional to 196.56, 272.38 and 192.08 is: 266.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    196.56 : 272.38 = 192.08 : x
  2. Step 2: Convert to fraction form
    196.56/272.38 = 192.08/x
  3. Step 3: Cross multiply
    196.56x = 272.38 × 192.08
  4. Step 4: Simplify right side
    196.56x = 52,318.75
  5. Step 5: Solve for x
    x = 52,318.75/196.56
  6. Step 6: Final answer
    x = 266.17

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Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.