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Finding the Fourth Proportional to 250.27, 376.91 and 221.74

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Solution

The fourth proportional to 250.27, 376.91 and 221.74 is: 333.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    250.27 : 376.91 = 221.74 : x
  2. Step 2: Convert to fraction form
    250.27/376.91 = 221.74/x
  3. Step 3: Cross multiply
    250.27x = 376.91 × 221.74
  4. Step 4: Simplify right side
    250.27x = 83,576.02
  5. Step 5: Solve for x
    x = 83,576.02/250.27
  6. Step 6: Final answer
    x = 333.94

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.