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Finding the Fourth Proportional to 273.51, 409.83 and 221.87

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Solution

The fourth proportional to 273.51, 409.83 and 221.87 is: 332.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    273.51 : 409.83 = 221.87 : x
  2. Step 2: Convert to fraction form
    273.51/409.83 = 221.87/x
  3. Step 3: Cross multiply
    273.51x = 409.83 × 221.87
  4. Step 4: Simplify right side
    273.51x = 90,926.93
  5. Step 5: Solve for x
    x = 90,926.93/273.51
  6. Step 6: Final answer
    x = 332.44

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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.