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Finding the Fourth Proportional to 180.79, 249.55 and 134.15

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Solution

The fourth proportional to 180.79, 249.55 and 134.15 is: 185.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    180.79 : 249.55 = 134.15 : x
  2. Step 2: Convert to fraction form
    180.79/249.55 = 134.15/x
  3. Step 3: Cross multiply
    180.79x = 249.55 × 134.15
  4. Step 4: Simplify right side
    180.79x = 33,475.21
  5. Step 5: Solve for x
    x = 33,475.21/180.79
  6. Step 6: Final answer
    x = 185.16

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.