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Finding the Fourth Proportional to 251.01, 374.52 and 220.23

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Solution

The fourth proportional to 251.01, 374.52 and 220.23 is: 328.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    251.01 : 374.52 = 220.23 : x
  2. Step 2: Convert to fraction form
    251.01/374.52 = 220.23/x
  3. Step 3: Cross multiply
    251.01x = 374.52 × 220.23
  4. Step 4: Simplify right side
    251.01x = 82,480.54
  5. Step 5: Solve for x
    x = 82,480.54/251.01
  6. Step 6: Final answer
    x = 328.59

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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.