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Finding the Fourth Proportional to 544.10, 815.87 and 251.55

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Solution

The fourth proportional to 544.10, 815.87 and 251.55 is: 377.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    544.10 : 815.87 = 251.55 : x
  2. Step 2: Convert to fraction form
    544.10/815.87 = 251.55/x
  3. Step 3: Cross multiply
    544.10x = 815.87 × 251.55
  4. Step 4: Simplify right side
    544.10x = 205,230.84
  5. Step 5: Solve for x
    x = 205,230.84/544.10
  6. Step 6: Final answer
    x = 377.20

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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.