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Finding the Fourth Proportional to 288.60, 433.01 and 158.44

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Solution

The fourth proportional to 288.60, 433.01 and 158.44 is: 237.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    288.60 : 433.01 = 158.44 : x
  2. Step 2: Convert to fraction form
    288.60/433.01 = 158.44/x
  3. Step 3: Cross multiply
    288.60x = 433.01 × 158.44
  4. Step 4: Simplify right side
    288.60x = 68,604.15
  5. Step 5: Solve for x
    x = 68,604.15/288.60
  6. Step 6: Final answer
    x = 237.71

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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.