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Finding the Fourth Proportional to 550.57, 759.67 and 384.73

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Solution

The fourth proportional to 550.57, 759.67 and 384.73 is: 530.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    550.57 : 759.67 = 384.73 : x
  2. Step 2: Convert to fraction form
    550.57/759.67 = 384.73/x
  3. Step 3: Cross multiply
    550.57x = 759.67 × 384.73
  4. Step 4: Simplify right side
    550.57x = 292,267.84
  5. Step 5: Solve for x
    x = 292,267.84/550.57
  6. Step 6: Final answer
    x = 530.85

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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.