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Finding the Fourth Proportional to 605.18, 906.68 and 344.90

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Solution

The fourth proportional to 605.18, 906.68 and 344.90 is: 516.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    605.18 : 906.68 = 344.90 : x
  2. Step 2: Convert to fraction form
    605.18/906.68 = 344.90/x
  3. Step 3: Cross multiply
    605.18x = 906.68 × 344.90
  4. Step 4: Simplify right side
    605.18x = 312,713.93
  5. Step 5: Solve for x
    x = 312,713.93/605.18
  6. Step 6: Final answer
    x = 516.73

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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.