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Finding the Fourth Proportional to 325.11, 448.61 and 185.21

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Solution

The fourth proportional to 325.11, 448.61 and 185.21 is: 255.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    325.11 : 448.61 = 185.21 : x
  2. Step 2: Convert to fraction form
    325.11/448.61 = 185.21/x
  3. Step 3: Cross multiply
    325.11x = 448.61 × 185.21
  4. Step 4: Simplify right side
    325.11x = 83,083.89
  5. Step 5: Solve for x
    x = 83,083.89/325.11
  6. Step 6: Final answer
    x = 255.56

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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.