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Finding the Fourth Proportional to 550.83, 759.95 and 314.61

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Solution

The fourth proportional to 550.83, 759.95 and 314.61 is: 434.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    550.83 : 759.95 = 314.61 : x
  2. Step 2: Convert to fraction form
    550.83/759.95 = 314.61/x
  3. Step 3: Cross multiply
    550.83x = 759.95 × 314.61
  4. Step 4: Simplify right side
    550.83x = 239,087.87
  5. Step 5: Solve for x
    x = 239,087.87/550.83
  6. Step 6: Final answer
    x = 434.05

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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.