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Finding the Fourth Proportional to 243.23, 335.59 and 149.94

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Solution

The fourth proportional to 243.23, 335.59 and 149.94 is: 206.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    243.23 : 335.59 = 149.94 : x
  2. Step 2: Convert to fraction form
    243.23/335.59 = 149.94/x
  3. Step 3: Cross multiply
    243.23x = 335.59 × 149.94
  4. Step 4: Simplify right side
    243.23x = 50,317.99
  5. Step 5: Solve for x
    x = 50,317.99/243.23
  6. Step 6: Final answer
    x = 206.88

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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.