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Finding the Fourth Proportional to 544.50, 816.21 and 255.42

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Solution

The fourth proportional to 544.50, 816.21 and 255.42 is: 382.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    544.50 : 816.21 = 255.42 : x
  2. Step 2: Convert to fraction form
    544.50/816.21 = 255.42/x
  3. Step 3: Cross multiply
    544.50x = 816.21 × 255.42
  4. Step 4: Simplify right side
    544.50x = 208,476.36
  5. Step 5: Solve for x
    x = 208,476.36/544.50
  6. Step 6: Final answer
    x = 382.88

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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.