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Finding the Fourth Proportional to 344.10, 516.20 and 149.07

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Solution

The fourth proportional to 344.10, 516.20 and 149.07 is: 223.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    344.10 : 516.20 = 149.07 : x
  2. Step 2: Convert to fraction form
    344.10/516.20 = 149.07/x
  3. Step 3: Cross multiply
    344.10x = 516.20 × 149.07
  4. Step 4: Simplify right side
    344.10x = 76,949.19
  5. Step 5: Solve for x
    x = 76,949.19/344.10
  6. Step 6: Final answer
    x = 223.62

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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.