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Finding the Fourth Proportional to 163.14, 243.30 and 149.10

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Solution

The fourth proportional to 163.14, 243.30 and 149.10 is: 222.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    163.14 : 243.30 = 149.10 : x
  2. Step 2: Convert to fraction form
    163.14/243.30 = 149.10/x
  3. Step 3: Cross multiply
    163.14x = 243.30 × 149.10
  4. Step 4: Simplify right side
    163.14x = 36,276.03
  5. Step 5: Solve for x
    x = 36,276.03/163.14
  6. Step 6: Final answer
    x = 222.36

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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.