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Finding the Fourth Proportional to 251.36, 374.31 and 235.79

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Solution

The fourth proportional to 251.36, 374.31 and 235.79 is: 351.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    251.36 : 374.31 = 235.79 : x
  2. Step 2: Convert to fraction form
    251.36/374.31 = 235.79/x
  3. Step 3: Cross multiply
    251.36x = 374.31 × 235.79
  4. Step 4: Simplify right side
    251.36x = 88,257.57
  5. Step 5: Solve for x
    x = 88,257.57/251.36
  6. Step 6: Final answer
    x = 351.13

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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.