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Finding the Fourth Proportional to 622.21, 932.81 and 344.55

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Solution

The fourth proportional to 622.21, 932.81 and 344.55 is: 516.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    622.21 : 932.81 = 344.55 : x
  2. Step 2: Convert to fraction form
    622.21/932.81 = 344.55/x
  3. Step 3: Cross multiply
    622.21x = 932.81 × 344.55
  4. Step 4: Simplify right side
    622.21x = 321,401.46
  5. Step 5: Solve for x
    x = 321,401.46/622.21
  6. Step 6: Final answer
    x = 516.55

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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.