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Finding the Fourth Proportional to 323.15, 445.12 and 273.30

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Solution

The fourth proportional to 323.15, 445.12 and 273.30 is: 376.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    323.15 : 445.12 = 273.30 : x
  2. Step 2: Convert to fraction form
    323.15/445.12 = 273.30/x
  3. Step 3: Cross multiply
    323.15x = 445.12 × 273.30
  4. Step 4: Simplify right side
    323.15x = 121,650.61
  5. Step 5: Solve for x
    x = 121,650.61/323.15
  6. Step 6: Final answer
    x = 376.46

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.