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Finding the Fourth Proportional to 343.35, 514.50 and 221.37

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Solution

The fourth proportional to 343.35, 514.50 and 221.37 is: 331.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    343.35 : 514.50 = 221.37 : x
  2. Step 2: Convert to fraction form
    343.35/514.50 = 221.37/x
  3. Step 3: Cross multiply
    343.35x = 514.50 × 221.37
  4. Step 4: Simplify right side
    343.35x = 113,892.11
  5. Step 5: Solve for x
    x = 113,892.11/343.35
  6. Step 6: Final answer
    x = 331.71

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.