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Finding the Fourth Proportional to 187.11, 281.48 and 162.81

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Solution

The fourth proportional to 187.11, 281.48 and 162.81 is: 244.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    187.11 : 281.48 = 162.81 : x
  2. Step 2: Convert to fraction form
    187.11/281.48 = 162.81/x
  3. Step 3: Cross multiply
    187.11x = 281.48 × 162.81
  4. Step 4: Simplify right side
    187.11x = 45,826.94
  5. Step 5: Solve for x
    x = 45,826.94/187.11
  6. Step 6: Final answer
    x = 244.92

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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.