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Finding the Fourth Proportional to 550.61, 759.84 and 314.57

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Solution

The fourth proportional to 550.61, 759.84 and 314.57 is: 434.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    550.61 : 759.84 = 314.57 : x
  2. Step 2: Convert to fraction form
    550.61/759.84 = 314.57/x
  3. Step 3: Cross multiply
    550.61x = 759.84 × 314.57
  4. Step 4: Simplify right side
    550.61x = 239,023.59
  5. Step 5: Solve for x
    x = 239,023.59/550.61
  6. Step 6: Final answer
    x = 434.11

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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.