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Finding the Fourth Proportional to 182.89, 273.98 and 128.57

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Solution

The fourth proportional to 182.89, 273.98 and 128.57 is: 192.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    182.89 : 273.98 = 128.57 : x
  2. Step 2: Convert to fraction form
    182.89/273.98 = 128.57/x
  3. Step 3: Cross multiply
    182.89x = 273.98 × 128.57
  4. Step 4: Simplify right side
    182.89x = 35,224.97
  5. Step 5: Solve for x
    x = 35,224.97/182.89
  6. Step 6: Final answer
    x = 192.60

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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.