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Finding the Fourth Proportional to 433.38, 650.21 and 140.93

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Solution

The fourth proportional to 433.38, 650.21 and 140.93 is: 211.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    433.38 : 650.21 = 140.93 : x
  2. Step 2: Convert to fraction form
    433.38/650.21 = 140.93/x
  3. Step 3: Cross multiply
    433.38x = 650.21 × 140.93
  4. Step 4: Simplify right side
    433.38x = 91,630.14
  5. Step 5: Solve for x
    x = 91,630.14/433.38
  6. Step 6: Final answer
    x = 211.43

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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.