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Finding the Fourth Proportional to 194.72, 292.36 and 140.88

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Solution

The fourth proportional to 194.72, 292.36 and 140.88 is: 211.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    194.72 : 292.36 = 140.88 : x
  2. Step 2: Convert to fraction form
    194.72/292.36 = 140.88/x
  3. Step 3: Cross multiply
    194.72x = 292.36 × 140.88
  4. Step 4: Simplify right side
    194.72x = 41,187.68
  5. Step 5: Solve for x
    x = 41,187.68/194.72
  6. Step 6: Final answer
    x = 211.52

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.