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Finding the Fourth Proportional to 182.63, 274.02 and 86.38

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Solution

The fourth proportional to 182.63, 274.02 and 86.38 is: 129.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    182.63 : 274.02 = 86.38 : x
  2. Step 2: Convert to fraction form
    182.63/274.02 = 86.38/x
  3. Step 3: Cross multiply
    182.63x = 274.02 × 86.38
  4. Step 4: Simplify right side
    182.63x = 23,669.85
  5. Step 5: Solve for x
    x = 23,669.85/182.63
  6. Step 6: Final answer
    x = 129.61

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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.