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Finding the Fourth Proportional to 353.38, 487.64 and 196.01

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Solution

The fourth proportional to 353.38, 487.64 and 196.01 is: 270.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    353.38 : 487.64 = 196.01 : x
  2. Step 2: Convert to fraction form
    353.38/487.64 = 196.01/x
  3. Step 3: Cross multiply
    353.38x = 487.64 × 196.01
  4. Step 4: Simplify right side
    353.38x = 95,582.56
  5. Step 5: Solve for x
    x = 95,582.56/353.38
  6. Step 6: Final answer
    x = 270.48

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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.