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Finding the Fourth Proportional to 195.12, 291.24 and 168.24

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Solution

The fourth proportional to 195.12, 291.24 and 168.24 is: 251.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    195.12 : 291.24 = 168.24 : x
  2. Step 2: Convert to fraction form
    195.12/291.24 = 168.24/x
  3. Step 3: Cross multiply
    195.12x = 291.24 × 168.24
  4. Step 4: Simplify right side
    195.12x = 48,998.22
  5. Step 5: Solve for x
    x = 48,998.22/195.12
  6. Step 6: Final answer
    x = 251.12

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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.