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Finding the Fourth Proportional to 196.12, 270.50 and 130.60

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Solution

The fourth proportional to 196.12, 270.50 and 130.60 is: 180.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    196.12 : 270.50 = 130.60 : x
  2. Step 2: Convert to fraction form
    196.12/270.50 = 130.60/x
  3. Step 3: Cross multiply
    196.12x = 270.50 × 130.60
  4. Step 4: Simplify right side
    196.12x = 35,327.30
  5. Step 5: Solve for x
    x = 35,327.30/196.12
  6. Step 6: Final answer
    x = 180.13

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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.