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Finding the Fourth Proportional to 550.72, 760.08 and 329.68

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Solution

The fourth proportional to 550.72, 760.08 and 329.68 is: 455.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    550.72 : 760.08 = 329.68 : x
  2. Step 2: Convert to fraction form
    550.72/760.08 = 329.68/x
  3. Step 3: Cross multiply
    550.72x = 760.08 × 329.68
  4. Step 4: Simplify right side
    550.72x = 250,583.17
  5. Step 5: Solve for x
    x = 250,583.17/550.72
  6. Step 6: Final answer
    x = 455.01

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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.