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Finding the Fourth Proportional to 163.98, 246.18 and 127.53

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Solution

The fourth proportional to 163.98, 246.18 and 127.53 is: 191.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    163.98 : 246.18 = 127.53 : x
  2. Step 2: Convert to fraction form
    163.98/246.18 = 127.53/x
  3. Step 3: Cross multiply
    163.98x = 246.18 × 127.53
  4. Step 4: Simplify right side
    163.98x = 31,395.34
  5. Step 5: Solve for x
    x = 31,395.34/163.98
  6. Step 6: Final answer
    x = 191.46

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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.