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Finding the Fourth Proportional to 492.18, 738.29 and 163.11

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Solution

The fourth proportional to 492.18, 738.29 and 163.11 is: 244.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    492.18 : 738.29 = 163.11 : x
  2. Step 2: Convert to fraction form
    492.18/738.29 = 163.11/x
  3. Step 3: Cross multiply
    492.18x = 738.29 × 163.11
  4. Step 4: Simplify right side
    492.18x = 120,422.48
  5. Step 5: Solve for x
    x = 120,422.48/492.18
  6. Step 6: Final answer
    x = 244.67

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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.