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Finding the Fourth Proportional to 344.57, 516.92 and 113.45

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Solution

The fourth proportional to 344.57, 516.92 and 113.45 is: 170.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    344.57 : 516.92 = 113.45 : x
  2. Step 2: Convert to fraction form
    344.57/516.92 = 113.45/x
  3. Step 3: Cross multiply
    344.57x = 516.92 × 113.45
  4. Step 4: Simplify right side
    344.57x = 58,641.42
  5. Step 5: Solve for x
    x = 58,641.42/344.57
  6. Step 6: Final answer
    x = 170.19

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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.