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Finding the Fourth Proportional to 168.98, 253.01 and 120.26

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Solution

The fourth proportional to 168.98, 253.01 and 120.26 is: 180.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    168.98 : 253.01 = 120.26 : x
  2. Step 2: Convert to fraction form
    168.98/253.01 = 120.26/x
  3. Step 3: Cross multiply
    168.98x = 253.01 × 120.26
  4. Step 4: Simplify right side
    168.98x = 30,425.12
  5. Step 5: Solve for x
    x = 30,425.12/168.98
  6. Step 6: Final answer
    x = 180.06

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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.