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Finding the Fourth Proportional to 433.72, 650.73 and 190.31

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Solution

The fourth proportional to 433.72, 650.73 and 190.31 is: 285.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    433.72 : 650.73 = 190.31 : x
  2. Step 2: Convert to fraction form
    433.72/650.73 = 190.31/x
  3. Step 3: Cross multiply
    433.72x = 650.73 × 190.31
  4. Step 4: Simplify right side
    433.72x = 123,840.43
  5. Step 5: Solve for x
    x = 123,840.43/433.72
  6. Step 6: Final answer
    x = 285.53

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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.