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Finding the Fourth Proportional to 163.89, 244.71 and 140.79

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Solution

The fourth proportional to 163.89, 244.71 and 140.79 is: 210.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    163.89 : 244.71 = 140.79 : x
  2. Step 2: Convert to fraction form
    163.89/244.71 = 140.79/x
  3. Step 3: Cross multiply
    163.89x = 244.71 × 140.79
  4. Step 4: Simplify right side
    163.89x = 34,452.72
  5. Step 5: Solve for x
    x = 34,452.72/163.89
  6. Step 6: Final answer
    x = 210.22

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.