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Finding the Fourth Proportional to 251.95, 379.60 and 227.60

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Solution

The fourth proportional to 251.95, 379.60 and 227.60 is: 342.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    251.95 : 379.60 = 227.60 : x
  2. Step 2: Convert to fraction form
    251.95/379.60 = 227.60/x
  3. Step 3: Cross multiply
    251.95x = 379.60 × 227.60
  4. Step 4: Simplify right side
    251.95x = 86,396.96
  5. Step 5: Solve for x
    x = 86,396.96/251.95
  6. Step 6: Final answer
    x = 342.92

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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.