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Finding the Fourth Proportional to 550.93, 759.19 and 401.05

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Solution

The fourth proportional to 550.93, 759.19 and 401.05 is: 552.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    550.93 : 759.19 = 401.05 : x
  2. Step 2: Convert to fraction form
    550.93/759.19 = 401.05/x
  3. Step 3: Cross multiply
    550.93x = 759.19 × 401.05
  4. Step 4: Simplify right side
    550.93x = 304,473.15
  5. Step 5: Solve for x
    x = 304,473.15/550.93
  6. Step 6: Final answer
    x = 552.65

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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.