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Finding the Fourth Proportional to 196.26, 270.78 and 133.99

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Solution

The fourth proportional to 196.26, 270.78 and 133.99 is: 184.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    196.26 : 270.78 = 133.99 : x
  2. Step 2: Convert to fraction form
    196.26/270.78 = 133.99/x
  3. Step 3: Cross multiply
    196.26x = 270.78 × 133.99
  4. Step 4: Simplify right side
    196.26x = 36,280.63
  5. Step 5: Solve for x
    x = 36,280.63/196.26
  6. Step 6: Final answer
    x = 184.86

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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.