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Finding the Fourth Proportional to 270.48, 404.64 and 198.12

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Solution

The fourth proportional to 270.48, 404.64 and 198.12 is: 296.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    270.48 : 404.64 = 198.12 : x
  2. Step 2: Convert to fraction form
    270.48/404.64 = 198.12/x
  3. Step 3: Cross multiply
    270.48x = 404.64 × 198.12
  4. Step 4: Simplify right side
    270.48x = 80,167.28
  5. Step 5: Solve for x
    x = 80,167.28/270.48
  6. Step 6: Final answer
    x = 296.39

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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.