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Finding the Fourth Proportional to 191.20, 284.90 and 182.48

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Solution

The fourth proportional to 191.20, 284.90 and 182.48 is: 271.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    191.20 : 284.90 = 182.48 : x
  2. Step 2: Convert to fraction form
    191.20/284.90 = 182.48/x
  3. Step 3: Cross multiply
    191.20x = 284.90 × 182.48
  4. Step 4: Simplify right side
    191.20x = 51,988.55
  5. Step 5: Solve for x
    x = 51,988.55/191.20
  6. Step 6: Final answer
    x = 271.91

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.