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Finding the Fourth Proportional to 344.46, 516.81 and 207.60

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Solution

The fourth proportional to 344.46, 516.81 and 207.60 is: 311.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    344.46 : 516.81 = 207.60 : x
  2. Step 2: Convert to fraction form
    344.46/516.81 = 207.60/x
  3. Step 3: Cross multiply
    344.46x = 516.81 × 207.60
  4. Step 4: Simplify right side
    344.46x = 107,289.76
  5. Step 5: Solve for x
    x = 107,289.76/344.46
  6. Step 6: Final answer
    x = 311.47

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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.