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Finding the Fourth Proportional to 235.11, 351.73 and 157.71

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Solution

The fourth proportional to 235.11, 351.73 and 157.71 is: 235.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    235.11 : 351.73 = 157.71 : x
  2. Step 2: Convert to fraction form
    235.11/351.73 = 157.71/x
  3. Step 3: Cross multiply
    235.11x = 351.73 × 157.71
  4. Step 4: Simplify right side
    235.11x = 55,471.34
  5. Step 5: Solve for x
    x = 55,471.34/235.11
  6. Step 6: Final answer
    x = 235.94

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.