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Finding the Fourth Proportional to 550.36, 759.75 and 353.97

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Solution

The fourth proportional to 550.36, 759.75 and 353.97 is: 488.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    550.36 : 759.75 = 353.97 : x
  2. Step 2: Convert to fraction form
    550.36/759.75 = 353.97/x
  3. Step 3: Cross multiply
    550.36x = 759.75 × 353.97
  4. Step 4: Simplify right side
    550.36x = 268,927.38
  5. Step 5: Solve for x
    x = 268,927.38/550.36
  6. Step 6: Final answer
    x = 488.64

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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.