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Finding the Fourth Proportional to 229.86, 344.79 and 193.71

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Solution

The fourth proportional to 229.86, 344.79 and 193.71 is: 290.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    229.86 : 344.79 = 193.71 : x
  2. Step 2: Convert to fraction form
    229.86/344.79 = 193.71/x
  3. Step 3: Cross multiply
    229.86x = 344.79 × 193.71
  4. Step 4: Simplify right side
    229.86x = 66,790.56
  5. Step 5: Solve for x
    x = 66,790.56/229.86
  6. Step 6: Final answer
    x = 290.57

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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.