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Finding the Fourth Proportional to 344.19, 516.72 and 220.77

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Solution

The fourth proportional to 344.19, 516.72 and 220.77 is: 331.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    344.19 : 516.72 = 220.77 : x
  2. Step 2: Convert to fraction form
    344.19/516.72 = 220.77/x
  3. Step 3: Cross multiply
    344.19x = 516.72 × 220.77
  4. Step 4: Simplify right side
    344.19x = 114,076.27
  5. Step 5: Solve for x
    x = 114,076.27/344.19
  6. Step 6: Final answer
    x = 331.43

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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.