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Finding the Fourth Proportional to 182.61, 273.90 and 74.40

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Solution

The fourth proportional to 182.61, 273.90 and 74.40 is: 111.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    182.61 : 273.90 = 74.40 : x
  2. Step 2: Convert to fraction form
    182.61/273.90 = 74.40/x
  3. Step 3: Cross multiply
    182.61x = 273.90 × 74.40
  4. Step 4: Simplify right side
    182.61x = 20,377.41
  5. Step 5: Solve for x
    x = 20,377.41/182.61
  6. Step 6: Final answer
    x = 111.59

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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.