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Finding the Fourth Proportional to 195.47, 269.75 and 137.35

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Solution

The fourth proportional to 195.47, 269.75 and 137.35 is: 189.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    195.47 : 269.75 = 137.35 : x
  2. Step 2: Convert to fraction form
    195.47/269.75 = 137.35/x
  3. Step 3: Cross multiply
    195.47x = 269.75 × 137.35
  4. Step 4: Simplify right side
    195.47x = 37,050.07
  5. Step 5: Solve for x
    x = 37,050.07/195.47
  6. Step 6: Final answer
    x = 189.54

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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.