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Finding the Fourth Proportional to 492.21, 738.38 and 167.54

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Solution

The fourth proportional to 492.21, 738.38 and 167.54 is: 251.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    492.21 : 738.38 = 167.54 : x
  2. Step 2: Convert to fraction form
    492.21/738.38 = 167.54/x
  3. Step 3: Cross multiply
    492.21x = 738.38 × 167.54
  4. Step 4: Simplify right side
    492.21x = 123,704.91
  5. Step 5: Solve for x
    x = 123,704.91/492.21
  6. Step 6: Final answer
    x = 251.33

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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.