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Finding the Fourth Proportional to 196.37, 270.98 and 107.85

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Solution

The fourth proportional to 196.37, 270.98 and 107.85 is: 148.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    196.37 : 270.98 = 107.85 : x
  2. Step 2: Convert to fraction form
    196.37/270.98 = 107.85/x
  3. Step 3: Cross multiply
    196.37x = 270.98 × 107.85
  4. Step 4: Simplify right side
    196.37x = 29,225.46
  5. Step 5: Solve for x
    x = 29,225.46/196.37
  6. Step 6: Final answer
    x = 148.83

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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.