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Finding the Fourth Proportional to 334.89, 462.20 and 279.54

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Solution

The fourth proportional to 334.89, 462.20 and 279.54 is: 385.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    334.89 : 462.20 = 279.54 : x
  2. Step 2: Convert to fraction form
    334.89/462.20 = 279.54/x
  3. Step 3: Cross multiply
    334.89x = 462.20 × 279.54
  4. Step 4: Simplify right side
    334.89x = 129,201.99
  5. Step 5: Solve for x
    x = 129,201.99/334.89
  6. Step 6: Final answer
    x = 385.80

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.