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Finding the Fourth Proportional to 251.39, 376.70 and 225.57

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Solution

The fourth proportional to 251.39, 376.70 and 225.57 is: 338.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    251.39 : 376.70 = 225.57 : x
  2. Step 2: Convert to fraction form
    251.39/376.70 = 225.57/x
  3. Step 3: Cross multiply
    251.39x = 376.70 × 225.57
  4. Step 4: Simplify right side
    251.39x = 84,971.09
  5. Step 5: Solve for x
    x = 84,971.09/251.39
  6. Step 6: Final answer
    x = 338.01

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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.