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Finding the Fourth Proportional to 544.11, 816.57 and 442.59

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Solution

The fourth proportional to 544.11, 816.57 and 442.59 is: 664.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    544.11 : 816.57 = 442.59 : x
  2. Step 2: Convert to fraction form
    544.11/816.57 = 442.59/x
  3. Step 3: Cross multiply
    544.11x = 816.57 × 442.59
  4. Step 4: Simplify right side
    544.11x = 361,405.72
  5. Step 5: Solve for x
    x = 361,405.72/544.11
  6. Step 6: Final answer
    x = 664.21

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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.