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Finding the Fourth Proportional to 195.12, 268.74 and 145.92

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Solution

The fourth proportional to 195.12, 268.74 and 145.92 is: 200.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    195.12 : 268.74 = 145.92 : x
  2. Step 2: Convert to fraction form
    195.12/268.74 = 145.92/x
  3. Step 3: Cross multiply
    195.12x = 268.74 × 145.92
  4. Step 4: Simplify right side
    195.12x = 39,214.54
  5. Step 5: Solve for x
    x = 39,214.54/195.12
  6. Step 6: Final answer
    x = 200.98

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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.