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Finding the Fourth Proportional to 433.42, 650.19 and 272.23

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Solution

The fourth proportional to 433.42, 650.19 and 272.23 is: 408.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    433.42 : 650.19 = 272.23 : x
  2. Step 2: Convert to fraction form
    433.42/650.19 = 272.23/x
  3. Step 3: Cross multiply
    433.42x = 650.19 × 272.23
  4. Step 4: Simplify right side
    433.42x = 177,000.62
  5. Step 5: Solve for x
    x = 177,000.62/433.42
  6. Step 6: Final answer
    x = 408.38

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.