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Finding the Fourth Proportional to 235.90, 351.34 and 227.40

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Solution

The fourth proportional to 235.90, 351.34 and 227.40 is: 338.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    235.90 : 351.34 = 227.40 : x
  2. Step 2: Convert to fraction form
    235.90/351.34 = 227.40/x
  3. Step 3: Cross multiply
    235.90x = 351.34 × 227.40
  4. Step 4: Simplify right side
    235.90x = 79,894.72
  5. Step 5: Solve for x
    x = 79,894.72/235.90
  6. Step 6: Final answer
    x = 338.68

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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.