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Finding the Fourth Proportional to 622.20, 936.88 and 450.02

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Solution

The fourth proportional to 622.20, 936.88 and 450.02 is: 677.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    622.20 : 936.88 = 450.02 : x
  2. Step 2: Convert to fraction form
    622.20/936.88 = 450.02/x
  3. Step 3: Cross multiply
    622.20x = 936.88 × 450.02
  4. Step 4: Simplify right side
    622.20x = 421,614.74
  5. Step 5: Solve for x
    x = 421,614.74/622.20
  6. Step 6: Final answer
    x = 677.62

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.