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Finding the Fourth Proportional to 168.02, 253.36 and 165.18

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Solution

The fourth proportional to 168.02, 253.36 and 165.18 is: 249.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    168.02 : 253.36 = 165.18 : x
  2. Step 2: Convert to fraction form
    168.02/253.36 = 165.18/x
  3. Step 3: Cross multiply
    168.02x = 253.36 × 165.18
  4. Step 4: Simplify right side
    168.02x = 41,850.00
  5. Step 5: Solve for x
    x = 41,850.00/168.02
  6. Step 6: Final answer
    x = 249.08

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.