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Finding the Fourth Proportional to 243.55, 335.69 and 188.27

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Solution

The fourth proportional to 243.55, 335.69 and 188.27 is: 259.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    243.55 : 335.69 = 188.27 : x
  2. Step 2: Convert to fraction form
    243.55/335.69 = 188.27/x
  3. Step 3: Cross multiply
    243.55x = 335.69 × 188.27
  4. Step 4: Simplify right side
    243.55x = 63,198.68
  5. Step 5: Solve for x
    x = 63,198.68/243.55
  6. Step 6: Final answer
    x = 259.49

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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.