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Finding the Fourth Proportional to 195.18, 269.12 and 158.22

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Solution

The fourth proportional to 195.18, 269.12 and 158.22 is: 218.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    195.18 : 269.12 = 158.22 : x
  2. Step 2: Convert to fraction form
    195.18/269.12 = 158.22/x
  3. Step 3: Cross multiply
    195.18x = 269.12 × 158.22
  4. Step 4: Simplify right side
    195.18x = 42,579.38
  5. Step 5: Solve for x
    x = 42,579.38/195.18
  6. Step 6: Final answer
    x = 218.15

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.