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Finding the Fourth Proportional to 191.42, 286.73 and 162.66

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Solution

The fourth proportional to 191.42, 286.73 and 162.66 is: 243.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    191.42 : 286.73 = 162.66 : x
  2. Step 2: Convert to fraction form
    191.42/286.73 = 162.66/x
  3. Step 3: Cross multiply
    191.42x = 286.73 × 162.66
  4. Step 4: Simplify right side
    191.42x = 46,639.50
  5. Step 5: Solve for x
    x = 46,639.50/191.42
  6. Step 6: Final answer
    x = 243.65

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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.