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Finding the Fourth Proportional to 490.20, 734.32 and 243.02

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Solution

The fourth proportional to 490.20, 734.32 and 243.02 is: 364.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    490.20 : 734.32 = 243.02 : x
  2. Step 2: Convert to fraction form
    490.20/734.32 = 243.02/x
  3. Step 3: Cross multiply
    490.20x = 734.32 × 243.02
  4. Step 4: Simplify right side
    490.20x = 178,454.45
  5. Step 5: Solve for x
    x = 178,454.45/490.20
  6. Step 6: Final answer
    x = 364.04

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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.