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Finding the Fourth Proportional to 492.22, 737.79 and 330.76

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Solution

The fourth proportional to 492.22, 737.79 and 330.76 is: 495.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    492.22 : 737.79 = 330.76 : x
  2. Step 2: Convert to fraction form
    492.22/737.79 = 330.76/x
  3. Step 3: Cross multiply
    492.22x = 737.79 × 330.76
  4. Step 4: Simplify right side
    492.22x = 244,031.42
  5. Step 5: Solve for x
    x = 244,031.42/492.22
  6. Step 6: Final answer
    x = 495.78

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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.