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Finding the Fourth Proportional to 144.96, 198.24 and 144.48

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Solution

The fourth proportional to 144.96, 198.24 and 144.48 is: 197.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    144.96 : 198.24 = 144.48 : x
  2. Step 2: Convert to fraction form
    144.96/198.24 = 144.48/x
  3. Step 3: Cross multiply
    144.96x = 198.24 × 144.48
  4. Step 4: Simplify right side
    144.96x = 28,641.72
  5. Step 5: Solve for x
    x = 28,641.72/144.96
  6. Step 6: Final answer
    x = 197.58

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.