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Finding the Fourth Proportional to 481.47, 664.28 and 271.62

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Solution

The fourth proportional to 481.47, 664.28 and 271.62 is: 374.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    481.47 : 664.28 = 271.62 : x
  2. Step 2: Convert to fraction form
    481.47/664.28 = 271.62/x
  3. Step 3: Cross multiply
    481.47x = 664.28 × 271.62
  4. Step 4: Simplify right side
    481.47x = 180,430.38
  5. Step 5: Solve for x
    x = 180,430.38/481.47
  6. Step 6: Final answer
    x = 374.75

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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.