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Finding the Fourth Proportional to 480.44, 719.99 and 219.81

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Solution

The fourth proportional to 480.44, 719.99 and 219.81 is: 329.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    480.44 : 719.99 = 219.81 : x
  2. Step 2: Convert to fraction form
    480.44/719.99 = 219.81/x
  3. Step 3: Cross multiply
    480.44x = 719.99 × 219.81
  4. Step 4: Simplify right side
    480.44x = 158,261.00
  5. Step 5: Solve for x
    x = 158,261.00/480.44
  6. Step 6: Final answer
    x = 329.41

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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.