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Finding the Fourth Proportional to 550.61, 759.87 and 401.26

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Solution

The fourth proportional to 550.61, 759.87 and 401.26 is: 553.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    550.61 : 759.87 = 401.26 : x
  2. Step 2: Convert to fraction form
    550.61/759.87 = 401.26/x
  3. Step 3: Cross multiply
    550.61x = 759.87 × 401.26
  4. Step 4: Simplify right side
    550.61x = 304,907.34
  5. Step 5: Solve for x
    x = 304,907.34/550.61
  6. Step 6: Final answer
    x = 553.77

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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.