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Finding the Fourth Proportional to 550.82, 759.29 and 440.12

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Solution

The fourth proportional to 550.82, 759.29 and 440.12 is: 606.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    550.82 : 759.29 = 440.12 : x
  2. Step 2: Convert to fraction form
    550.82/759.29 = 440.12/x
  3. Step 3: Cross multiply
    550.82x = 759.29 × 440.12
  4. Step 4: Simplify right side
    550.82x = 334,172.72
  5. Step 5: Solve for x
    x = 334,172.72/550.82
  6. Step 6: Final answer
    x = 606.69

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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.