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Finding the Fourth Proportional to 325.75, 449.49 and 191.16

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Solution

The fourth proportional to 325.75, 449.49 and 191.16 is: 263.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    325.75 : 449.49 = 191.16 : x
  2. Step 2: Convert to fraction form
    325.75/449.49 = 191.16/x
  3. Step 3: Cross multiply
    325.75x = 449.49 × 191.16
  4. Step 4: Simplify right side
    325.75x = 85,924.51
  5. Step 5: Solve for x
    x = 85,924.51/325.75
  6. Step 6: Final answer
    x = 263.77

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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.