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Finding the Fourth Proportional to 480.39, 720.84 and 223.89

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Solution

The fourth proportional to 480.39, 720.84 and 223.89 is: 335.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    480.39 : 720.84 = 223.89 : x
  2. Step 2: Convert to fraction form
    480.39/720.84 = 223.89/x
  3. Step 3: Cross multiply
    480.39x = 720.84 × 223.89
  4. Step 4: Simplify right side
    480.39x = 161,388.87
  5. Step 5: Solve for x
    x = 161,388.87/480.39
  6. Step 6: Final answer
    x = 335.95

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.