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Finding the Fourth Proportional to 195.12, 268.86 and 151.32

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Solution

The fourth proportional to 195.12, 268.86 and 151.32 is: 208.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    195.12 : 268.86 = 151.32 : x
  2. Step 2: Convert to fraction form
    195.12/268.86 = 151.32/x
  3. Step 3: Cross multiply
    195.12x = 268.86 × 151.32
  4. Step 4: Simplify right side
    195.12x = 40,683.90
  5. Step 5: Solve for x
    x = 40,683.90/195.12
  6. Step 6: Final answer
    x = 208.51

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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.