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Finding the Fourth Proportional to 235.42, 324.91 and 131.94

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Solution

The fourth proportional to 235.42, 324.91 and 131.94 is: 182.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    235.42 : 324.91 = 131.94 : x
  2. Step 2: Convert to fraction form
    235.42/324.91 = 131.94/x
  3. Step 3: Cross multiply
    235.42x = 324.91 × 131.94
  4. Step 4: Simplify right side
    235.42x = 42,868.63
  5. Step 5: Solve for x
    x = 42,868.63/235.42
  6. Step 6: Final answer
    x = 182.09

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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.