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Finding the Fourth Proportional to 268.95, 371.48 and 195.15

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Solution

The fourth proportional to 268.95, 371.48 and 195.15 is: 269.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    268.95 : 371.48 = 195.15 : x
  2. Step 2: Convert to fraction form
    268.95/371.48 = 195.15/x
  3. Step 3: Cross multiply
    268.95x = 371.48 × 195.15
  4. Step 4: Simplify right side
    268.95x = 72,494.32
  5. Step 5: Solve for x
    x = 72,494.32/268.95
  6. Step 6: Final answer
    x = 269.55

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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.