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Finding the Fourth Proportional to 227.40, 339.13 and 193.38

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Solution

The fourth proportional to 227.40, 339.13 and 193.38 is: 288.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    227.40 : 339.13 = 193.38 : x
  2. Step 2: Convert to fraction form
    227.40/339.13 = 193.38/x
  3. Step 3: Cross multiply
    227.40x = 339.13 × 193.38
  4. Step 4: Simplify right side
    227.40x = 65,580.96
  5. Step 5: Solve for x
    x = 65,580.96/227.40
  6. Step 6: Final answer
    x = 288.39

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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.