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Finding the Fourth Proportional to 163.95, 246.37 and 118.38

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Solution

The fourth proportional to 163.95, 246.37 and 118.38 is: 177.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    163.95 : 246.37 = 118.38 : x
  2. Step 2: Convert to fraction form
    163.95/246.37 = 118.38/x
  3. Step 3: Cross multiply
    163.95x = 246.37 × 118.38
  4. Step 4: Simplify right side
    163.95x = 29,165.28
  5. Step 5: Solve for x
    x = 29,165.28/163.95
  6. Step 6: Final answer
    x = 177.89

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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.