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Finding the Fourth Proportional to 183.17, 275.72 and 129.44

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Solution

The fourth proportional to 183.17, 275.72 and 129.44 is: 194.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    183.17 : 275.72 = 129.44 : x
  2. Step 2: Convert to fraction form
    183.17/275.72 = 129.44/x
  3. Step 3: Cross multiply
    183.17x = 275.72 × 129.44
  4. Step 4: Simplify right side
    183.17x = 35,689.20
  5. Step 5: Solve for x
    x = 35,689.20/183.17
  6. Step 6: Final answer
    x = 194.84

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.