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Finding the Fourth Proportional to 544.82, 816.60 and 422.69

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Solution

The fourth proportional to 544.82, 816.60 and 422.69 is: 633.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    544.82 : 816.60 = 422.69 : x
  2. Step 2: Convert to fraction form
    544.82/816.60 = 422.69/x
  3. Step 3: Cross multiply
    544.82x = 816.60 × 422.69
  4. Step 4: Simplify right side
    544.82x = 345,168.65
  5. Step 5: Solve for x
    x = 345,168.65/544.82
  6. Step 6: Final answer
    x = 633.55

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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.