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Finding the Fourth Proportional to 251.51, 375.27 and 220.73

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Solution

The fourth proportional to 251.51, 375.27 and 220.73 is: 329.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    251.51 : 375.27 = 220.73 : x
  2. Step 2: Convert to fraction form
    251.51/375.27 = 220.73/x
  3. Step 3: Cross multiply
    251.51x = 375.27 × 220.73
  4. Step 4: Simplify right side
    251.51x = 82,832.24
  5. Step 5: Solve for x
    x = 82,832.24/251.51
  6. Step 6: Final answer
    x = 329.34

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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.