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Finding the Fourth Proportional to 550.32, 759.16 and 445.53

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Solution

The fourth proportional to 550.32, 759.16 and 445.53 is: 614.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    550.32 : 759.16 = 445.53 : x
  2. Step 2: Convert to fraction form
    550.32/759.16 = 445.53/x
  3. Step 3: Cross multiply
    550.32x = 759.16 × 445.53
  4. Step 4: Simplify right side
    550.32x = 338,227.44
  5. Step 5: Solve for x
    x = 338,227.44/550.32
  6. Step 6: Final answer
    x = 614.60

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.