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Finding the Fourth Proportional to 273.96, 411.10 and 109.40

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Solution

The fourth proportional to 273.96, 411.10 and 109.40 is: 164.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    273.96 : 411.10 = 109.40 : x
  2. Step 2: Convert to fraction form
    273.96/411.10 = 109.40/x
  3. Step 3: Cross multiply
    273.96x = 411.10 × 109.40
  4. Step 4: Simplify right side
    273.96x = 44,972.01
  5. Step 5: Solve for x
    x = 44,972.01/273.96
  6. Step 6: Final answer
    x = 164.16

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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.