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Finding the Fourth Proportional to 544.15, 816.36 and 255.25

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Solution

The fourth proportional to 544.15, 816.36 and 255.25 is: 382.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    544.15 : 816.36 = 255.25 : x
  2. Step 2: Convert to fraction form
    544.15/816.36 = 255.25/x
  3. Step 3: Cross multiply
    544.15x = 816.36 × 255.25
  4. Step 4: Simplify right side
    544.15x = 208,375.89
  5. Step 5: Solve for x
    x = 208,375.89/544.15
  6. Step 6: Final answer
    x = 382.94

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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.