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Finding the Fourth Proportional to 163.52, 246.16 and 140.04

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Solution

The fourth proportional to 163.52, 246.16 and 140.04 is: 210.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    163.52 : 246.16 = 140.04 : x
  2. Step 2: Convert to fraction form
    163.52/246.16 = 140.04/x
  3. Step 3: Cross multiply
    163.52x = 246.16 × 140.04
  4. Step 4: Simplify right side
    163.52x = 34,472.25
  5. Step 5: Solve for x
    x = 34,472.25/163.52
  6. Step 6: Final answer
    x = 210.81

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.