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Finding the Fourth Proportional to 481.99, 665.22 and 272.25

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Solution

The fourth proportional to 481.99, 665.22 and 272.25 is: 375.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    481.99 : 665.22 = 272.25 : x
  2. Step 2: Convert to fraction form
    481.99/665.22 = 272.25/x
  3. Step 3: Cross multiply
    481.99x = 665.22 × 272.25
  4. Step 4: Simplify right side
    481.99x = 181,107.13
  5. Step 5: Solve for x
    x = 181,107.13/481.99
  6. Step 6: Final answer
    x = 375.75

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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.