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Finding the Fourth Proportional to 235.22, 323.78 and 188.24

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Solution

The fourth proportional to 235.22, 323.78 and 188.24 is: 259.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    235.22 : 323.78 = 188.24 : x
  2. Step 2: Convert to fraction form
    235.22/323.78 = 188.24/x
  3. Step 3: Cross multiply
    235.22x = 323.78 × 188.24
  4. Step 4: Simplify right side
    235.22x = 60,945.79
  5. Step 5: Solve for x
    x = 60,945.79/235.22
  6. Step 6: Final answer
    x = 259.11

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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.