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Finding the Fourth Proportional to 490.07, 734.54 and 273.21

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Solution

The fourth proportional to 490.07, 734.54 and 273.21 is: 409.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    490.07 : 734.54 = 273.21 : x
  2. Step 2: Convert to fraction form
    490.07/734.54 = 273.21/x
  3. Step 3: Cross multiply
    490.07x = 734.54 × 273.21
  4. Step 4: Simplify right side
    490.07x = 200,682.31
  5. Step 5: Solve for x
    x = 200,682.31/490.07
  6. Step 6: Final answer
    x = 409.50

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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.