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Finding the Fourth Proportional to 550.21, 825.45 and 453.82

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Solution

The fourth proportional to 550.21, 825.45 and 453.82 is: 680.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    550.21 : 825.45 = 453.82 : x
  2. Step 2: Convert to fraction form
    550.21/825.45 = 453.82/x
  3. Step 3: Cross multiply
    550.21x = 825.45 × 453.82
  4. Step 4: Simplify right side
    550.21x = 374,605.72
  5. Step 5: Solve for x
    x = 374,605.72/550.21
  6. Step 6: Final answer
    x = 680.84

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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.