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Finding the Fourth Proportional to 182.84, 274.32 and 86.72

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Solution

The fourth proportional to 182.84, 274.32 and 86.72 is: 130.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    182.84 : 274.32 = 86.72 : x
  2. Step 2: Convert to fraction form
    182.84/274.32 = 86.72/x
  3. Step 3: Cross multiply
    182.84x = 274.32 × 86.72
  4. Step 4: Simplify right side
    182.84x = 23,789.03
  5. Step 5: Solve for x
    x = 23,789.03/182.84
  6. Step 6: Final answer
    x = 130.11

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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.