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Finding the Fourth Proportional to 235.76, 351.86 and 229.61

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Solution

The fourth proportional to 235.76, 351.86 and 229.61 is: 342.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    235.76 : 351.86 = 229.61 : x
  2. Step 2: Convert to fraction form
    235.76/351.86 = 229.61/x
  3. Step 3: Cross multiply
    235.76x = 351.86 × 229.61
  4. Step 4: Simplify right side
    235.76x = 80,790.31
  5. Step 5: Solve for x
    x = 80,790.31/235.76
  6. Step 6: Final answer
    x = 342.69

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.