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Finding the Fourth Proportional to 480.33, 662.83 and 281.20

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Solution

The fourth proportional to 480.33, 662.83 and 281.20 is: 388.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    480.33 : 662.83 = 281.20 : x
  2. Step 2: Convert to fraction form
    480.33/662.83 = 281.20/x
  3. Step 3: Cross multiply
    480.33x = 662.83 × 281.20
  4. Step 4: Simplify right side
    480.33x = 186,387.80
  5. Step 5: Solve for x
    x = 186,387.80/480.33
  6. Step 6: Final answer
    x = 388.04

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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.