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Finding the Fourth Proportional to 481.03, 663.50 and 331.66

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Solution

The fourth proportional to 481.03, 663.50 and 331.66 is: 457.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    481.03 : 663.50 = 331.66 : x
  2. Step 2: Convert to fraction form
    481.03/663.50 = 331.66/x
  3. Step 3: Cross multiply
    481.03x = 663.50 × 331.66
  4. Step 4: Simplify right side
    481.03x = 220,053.51
  5. Step 5: Solve for x
    x = 220,053.51/481.03
  6. Step 6: Final answer
    x = 457.47

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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.