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Finding the Fourth Proportional to 550.50, 759.48 and 384.66

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Solution

The fourth proportional to 550.50, 759.48 and 384.66 is: 530.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    550.50 : 759.48 = 384.66 : x
  2. Step 2: Convert to fraction form
    550.50/759.48 = 384.66/x
  3. Step 3: Cross multiply
    550.50x = 759.48 × 384.66
  4. Step 4: Simplify right side
    550.50x = 292,141.58
  5. Step 5: Solve for x
    x = 292,141.58/550.50
  6. Step 6: Final answer
    x = 530.68

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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.