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Finding the Fourth Proportional to 144.88, 199.90 and 108.04

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Solution

The fourth proportional to 144.88, 199.90 and 108.04 is: 149.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    144.88 : 199.90 = 108.04 : x
  2. Step 2: Convert to fraction form
    144.88/199.90 = 108.04/x
  3. Step 3: Cross multiply
    144.88x = 199.90 × 108.04
  4. Step 4: Simplify right side
    144.88x = 21,597.20
  5. Step 5: Solve for x
    x = 21,597.20/144.88
  6. Step 6: Final answer
    x = 149.07

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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.