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Finding the Fourth Proportional to 217.68, 300.41 and 144.19

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Solution

The fourth proportional to 217.68, 300.41 and 144.19 is: 198.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    217.68 : 300.41 = 144.19 : x
  2. Step 2: Convert to fraction form
    217.68/300.41 = 144.19/x
  3. Step 3: Cross multiply
    217.68x = 300.41 × 144.19
  4. Step 4: Simplify right side
    217.68x = 43,316.12
  5. Step 5: Solve for x
    x = 43,316.12/217.68
  6. Step 6: Final answer
    x = 198.99

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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.