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Finding the Fourth Proportional to 144.60, 199.40 and 141.26

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Solution

The fourth proportional to 144.60, 199.40 and 141.26 is: 194.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    144.60 : 199.40 = 141.26 : x
  2. Step 2: Convert to fraction form
    144.60/199.40 = 141.26/x
  3. Step 3: Cross multiply
    144.60x = 199.40 × 141.26
  4. Step 4: Simplify right side
    144.60x = 28,165.54
  5. Step 5: Solve for x
    x = 28,165.54/144.60
  6. Step 6: Final answer
    x = 194.78

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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.