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Finding the Fourth Proportional to 163.65, 244.30 and 141.63

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Solution

The fourth proportional to 163.65, 244.30 and 141.63 is: 211.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    163.65 : 244.30 = 141.63 : x
  2. Step 2: Convert to fraction form
    163.65/244.30 = 141.63/x
  3. Step 3: Cross multiply
    163.65x = 244.30 × 141.63
  4. Step 4: Simplify right side
    163.65x = 34,600.21
  5. Step 5: Solve for x
    x = 34,600.21/163.65
  6. Step 6: Final answer
    x = 211.43

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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.