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Finding the Fourth Proportional to 182.81, 273.93 and 121.90

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Solution

The fourth proportional to 182.81, 273.93 and 121.90 is: 182.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    182.81 : 273.93 = 121.90 : x
  2. Step 2: Convert to fraction form
    182.81/273.93 = 121.90/x
  3. Step 3: Cross multiply
    182.81x = 273.93 × 121.90
  4. Step 4: Simplify right side
    182.81x = 33,392.07
  5. Step 5: Solve for x
    x = 33,392.07/182.81
  6. Step 6: Final answer
    x = 182.66

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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.