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Finding the Fourth Proportional to 655.36, 984.08 and 622.47

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Solution

The fourth proportional to 655.36, 984.08 and 622.47 is: 934.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    655.36 : 984.08 = 622.47 : x
  2. Step 2: Convert to fraction form
    655.36/984.08 = 622.47/x
  3. Step 3: Cross multiply
    655.36x = 984.08 × 622.47
  4. Step 4: Simplify right side
    655.36x = 612,560.28
  5. Step 5: Solve for x
    x = 612,560.28/655.36
  6. Step 6: Final answer
    x = 934.69

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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.