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Finding the Fourth Proportional to 289.08, 433.17 and 158.97

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Solution

The fourth proportional to 289.08, 433.17 and 158.97 is: 238.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    289.08 : 433.17 = 158.97 : x
  2. Step 2: Convert to fraction form
    289.08/433.17 = 158.97/x
  3. Step 3: Cross multiply
    289.08x = 433.17 × 158.97
  4. Step 4: Simplify right side
    289.08x = 68,861.03
  5. Step 5: Solve for x
    x = 68,861.03/289.08
  6. Step 6: Final answer
    x = 238.21

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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.