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Finding the Fourth Proportional to 492.35, 737.78 and 218.30

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Solution

The fourth proportional to 492.35, 737.78 and 218.30 is: 327.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    492.35 : 737.78 = 218.30 : x
  2. Step 2: Convert to fraction form
    492.35/737.78 = 218.30/x
  3. Step 3: Cross multiply
    492.35x = 737.78 × 218.30
  4. Step 4: Simplify right side
    492.35x = 161,052.59
  5. Step 5: Solve for x
    x = 161,052.59/492.35
  6. Step 6: Final answer
    x = 327.11

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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.