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Finding the Fourth Proportional to 325.11, 448.74 and 200.78

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Solution

The fourth proportional to 325.11, 448.74 and 200.78 is: 277.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    325.11 : 448.74 = 200.78 : x
  2. Step 2: Convert to fraction form
    325.11/448.74 = 200.78/x
  3. Step 3: Cross multiply
    325.11x = 448.74 × 200.78
  4. Step 4: Simplify right side
    325.11x = 90,095.77
  5. Step 5: Solve for x
    x = 90,095.77/325.11
  6. Step 6: Final answer
    x = 277.12

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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.