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Finding the Fourth Proportional to 344.13, 516.20 and 207.45

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Solution

The fourth proportional to 344.13, 516.20 and 207.45 is: 311.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    344.13 : 516.20 = 207.45 : x
  2. Step 2: Convert to fraction form
    344.13/516.20 = 207.45/x
  3. Step 3: Cross multiply
    344.13x = 516.20 × 207.45
  4. Step 4: Simplify right side
    344.13x = 107,084.65
  5. Step 5: Solve for x
    x = 107,084.65/344.13
  6. Step 6: Final answer
    x = 311.18

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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.