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Finding the Fourth Proportional to 252.08, 378.48 and 191.96

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Solution

The fourth proportional to 252.08, 378.48 and 191.96 is: 288.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    252.08 : 378.48 = 191.96 : x
  2. Step 2: Convert to fraction form
    252.08/378.48 = 191.96/x
  3. Step 3: Cross multiply
    252.08x = 378.48 × 191.96
  4. Step 4: Simplify right side
    252.08x = 72,653.02
  5. Step 5: Solve for x
    x = 72,653.02/252.08
  6. Step 6: Final answer
    x = 288.21

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.