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Finding the Fourth Proportional to 195.35, 269.53 and 158.45

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Solution

The fourth proportional to 195.35, 269.53 and 158.45 is: 218.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    195.35 : 269.53 = 158.45 : x
  2. Step 2: Convert to fraction form
    195.35/269.53 = 158.45/x
  3. Step 3: Cross multiply
    195.35x = 269.53 × 158.45
  4. Step 4: Simplify right side
    195.35x = 42,705.28
  5. Step 5: Solve for x
    x = 42,705.28/195.35
  6. Step 6: Final answer
    x = 218.61

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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.