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Finding the Fourth Proportional to 235.44, 324.92 and 137.23

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Solution

The fourth proportional to 235.44, 324.92 and 137.23 is: 189.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    235.44 : 324.92 = 137.23 : x
  2. Step 2: Convert to fraction form
    235.44/324.92 = 137.23/x
  3. Step 3: Cross multiply
    235.44x = 324.92 × 137.23
  4. Step 4: Simplify right side
    235.44x = 44,588.77
  5. Step 5: Solve for x
    x = 44,588.77/235.44
  6. Step 6: Final answer
    x = 189.38

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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.