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Finding the Fourth Proportional to 254.31, 379.62 and 223.55

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Solution

The fourth proportional to 254.31, 379.62 and 223.55 is: 333.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    254.31 : 379.62 = 223.55 : x
  2. Step 2: Convert to fraction form
    254.31/379.62 = 223.55/x
  3. Step 3: Cross multiply
    254.31x = 379.62 × 223.55
  4. Step 4: Simplify right side
    254.31x = 84,865.00
  5. Step 5: Solve for x
    x = 84,865.00/254.31
  6. Step 6: Final answer
    x = 333.71

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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.