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Finding the Fourth Proportional to 227, 339.68 and 145.46

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Solution

The fourth proportional to 227, 339.68 and 145.46 is: 217.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    227 : 339.68 = 145.46 : x
  2. Step 2: Convert to fraction form
    227/339.68 = 145.46/x
  3. Step 3: Cross multiply
    227x = 339.68 × 145.46
  4. Step 4: Simplify right side
    227x = 49,409.85
  5. Step 5: Solve for x
    x = 49,409.85/227
  6. Step 6: Final answer
    x = 217.66

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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.