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Finding the Fourth Proportional to 366.11, 505.12 and 331.03

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Solution

The fourth proportional to 366.11, 505.12 and 331.03 is: 456.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    366.11 : 505.12 = 331.03 : x
  2. Step 2: Convert to fraction form
    366.11/505.12 = 331.03/x
  3. Step 3: Cross multiply
    366.11x = 505.12 × 331.03
  4. Step 4: Simplify right side
    366.11x = 167,205.69
  5. Step 5: Solve for x
    x = 167,205.69/366.11
  6. Step 6: Final answer
    x = 456.72

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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.