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Finding the Fourth Proportional to 191.67, 286.12 and 177.20

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Solution

The fourth proportional to 191.67, 286.12 and 177.20 is: 264.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    191.67 : 286.12 = 177.20 : x
  2. Step 2: Convert to fraction form
    191.67/286.12 = 177.20/x
  3. Step 3: Cross multiply
    191.67x = 286.12 × 177.20
  4. Step 4: Simplify right side
    191.67x = 50,700.46
  5. Step 5: Solve for x
    x = 50,700.46/191.67
  6. Step 6: Final answer
    x = 264.52

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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.