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Finding the Fourth Proportional to 492.89, 738.11 and 371.39

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Solution

The fourth proportional to 492.89, 738.11 and 371.39 is: 556.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    492.89 : 738.11 = 371.39 : x
  2. Step 2: Convert to fraction form
    492.89/738.11 = 371.39/x
  3. Step 3: Cross multiply
    492.89x = 738.11 × 371.39
  4. Step 4: Simplify right side
    492.89x = 274,123.91
  5. Step 5: Solve for x
    x = 274,123.91/492.89
  6. Step 6: Final answer
    x = 556.16

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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.