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Finding the Fourth Proportional to 433.87, 650.81 and 141.40

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Solution

The fourth proportional to 433.87, 650.81 and 141.40 is: 212.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    433.87 : 650.81 = 141.40 : x
  2. Step 2: Convert to fraction form
    433.87/650.81 = 141.40/x
  3. Step 3: Cross multiply
    433.87x = 650.81 × 141.40
  4. Step 4: Simplify right side
    433.87x = 92,020.57
  5. Step 5: Solve for x
    x = 92,020.57/433.87
  6. Step 6: Final answer
    x = 212.09

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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.