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Finding the Fourth Proportional to 183.79, 275.22 and 129.55

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Solution

The fourth proportional to 183.79, 275.22 and 129.55 is: 194.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    183.79 : 275.22 = 129.55 : x
  2. Step 2: Convert to fraction form
    183.79/275.22 = 129.55/x
  3. Step 3: Cross multiply
    183.79x = 275.22 × 129.55
  4. Step 4: Simplify right side
    183.79x = 35,654.75
  5. Step 5: Solve for x
    x = 35,654.75/183.79
  6. Step 6: Final answer
    x = 194.00

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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.