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Finding the Fourth Proportional to 273.90, 411.45 and 202.22

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Solution

The fourth proportional to 273.90, 411.45 and 202.22 is: 303.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    273.90 : 411.45 = 202.22 : x
  2. Step 2: Convert to fraction form
    273.90/411.45 = 202.22/x
  3. Step 3: Cross multiply
    273.90x = 411.45 × 202.22
  4. Step 4: Simplify right side
    273.90x = 83,203.42
  5. Step 5: Solve for x
    x = 83,203.42/273.90
  6. Step 6: Final answer
    x = 303.77

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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.