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Finding the Fourth Proportional to 481.17, 664.28 and 383.43

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Solution

The fourth proportional to 481.17, 664.28 and 383.43 is: 529.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    481.17 : 664.28 = 383.43 : x
  2. Step 2: Convert to fraction form
    481.17/664.28 = 383.43/x
  3. Step 3: Cross multiply
    481.17x = 664.28 × 383.43
  4. Step 4: Simplify right side
    481.17x = 254,704.88
  5. Step 5: Solve for x
    x = 254,704.88/481.17
  6. Step 6: Final answer
    x = 529.34

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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.