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Finding the Fourth Proportional to 182.05, 272.80 and 100.78

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Solution

The fourth proportional to 182.05, 272.80 and 100.78 is: 151.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    182.05 : 272.80 = 100.78 : x
  2. Step 2: Convert to fraction form
    182.05/272.80 = 100.78/x
  3. Step 3: Cross multiply
    182.05x = 272.80 × 100.78
  4. Step 4: Simplify right side
    182.05x = 27,492.78
  5. Step 5: Solve for x
    x = 27,492.78/182.05
  6. Step 6: Final answer
    x = 151.02

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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.