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Finding the Fourth Proportional to 433.75, 650.61 and 109.11

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Solution

The fourth proportional to 433.75, 650.61 and 109.11 is: 163.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    433.75 : 650.61 = 109.11 : x
  2. Step 2: Convert to fraction form
    433.75/650.61 = 109.11/x
  3. Step 3: Cross multiply
    433.75x = 650.61 × 109.11
  4. Step 4: Simplify right side
    433.75x = 70,988.06
  5. Step 5: Solve for x
    x = 70,988.06/433.75
  6. Step 6: Final answer
    x = 163.66

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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.