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Finding the Fourth Proportional to 325.23, 448.50 and 255.18

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Solution

The fourth proportional to 325.23, 448.50 and 255.18 is: 351.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    325.23 : 448.50 = 255.18 : x
  2. Step 2: Convert to fraction form
    325.23/448.50 = 255.18/x
  3. Step 3: Cross multiply
    325.23x = 448.50 × 255.18
  4. Step 4: Simplify right side
    325.23x = 114,448.23
  5. Step 5: Solve for x
    x = 114,448.23/325.23
  6. Step 6: Final answer
    x = 351.90

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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.