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Finding the Fourth Proportional to 492.21, 738.32 and 167.57

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Solution

The fourth proportional to 492.21, 738.32 and 167.57 is: 251.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    492.21 : 738.32 = 167.57 : x
  2. Step 2: Convert to fraction form
    492.21/738.32 = 167.57/x
  3. Step 3: Cross multiply
    492.21x = 738.32 × 167.57
  4. Step 4: Simplify right side
    492.21x = 123,720.28
  5. Step 5: Solve for x
    x = 123,720.28/492.21
  6. Step 6: Final answer
    x = 251.36

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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.