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Finding the Fourth Proportional to 235.75, 325.39 and 137.52

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Solution

The fourth proportional to 235.75, 325.39 and 137.52 is: 189.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    235.75 : 325.39 = 137.52 : x
  2. Step 2: Convert to fraction form
    235.75/325.39 = 137.52/x
  3. Step 3: Cross multiply
    235.75x = 325.39 × 137.52
  4. Step 4: Simplify right side
    235.75x = 44,747.63
  5. Step 5: Solve for x
    x = 44,747.63/235.75
  6. Step 6: Final answer
    x = 189.81

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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.