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Finding the Fourth Proportional to 480.07, 662.43 and 270.21

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Solution

The fourth proportional to 480.07, 662.43 and 270.21 is: 372.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    480.07 : 662.43 = 270.21 : x
  2. Step 2: Convert to fraction form
    480.07/662.43 = 270.21/x
  3. Step 3: Cross multiply
    480.07x = 662.43 × 270.21
  4. Step 4: Simplify right side
    480.07x = 178,995.21
  5. Step 5: Solve for x
    x = 178,995.21/480.07
  6. Step 6: Final answer
    x = 372.85

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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.