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Finding the Fourth Proportional to 163.09, 243.97 and 98.09

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Solution

The fourth proportional to 163.09, 243.97 and 98.09 is: 146.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    163.09 : 243.97 = 98.09 : x
  2. Step 2: Convert to fraction form
    163.09/243.97 = 98.09/x
  3. Step 3: Cross multiply
    163.09x = 243.97 × 98.09
  4. Step 4: Simplify right side
    163.09x = 23,931.02
  5. Step 5: Solve for x
    x = 23,931.02/163.09
  6. Step 6: Final answer
    x = 146.74

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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.