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Finding the Fourth Proportional to 344, 516.18 and 127.64

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Solution

The fourth proportional to 344, 516.18 and 127.64 is: 191.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    344 : 516.18 = 127.64 : x
  2. Step 2: Convert to fraction form
    344/516.18 = 127.64/x
  3. Step 3: Cross multiply
    344x = 516.18 × 127.64
  4. Step 4: Simplify right side
    344x = 65,885.22
  5. Step 5: Solve for x
    x = 65,885.22/344
  6. Step 6: Final answer
    x = 191.53

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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.