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Finding the Fourth Proportional to 323.75, 446.80 and 185.75

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Solution

The fourth proportional to 323.75, 446.80 and 185.75 is: 256.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    323.75 : 446.80 = 185.75 : x
  2. Step 2: Convert to fraction form
    323.75/446.80 = 185.75/x
  3. Step 3: Cross multiply
    323.75x = 446.80 × 185.75
  4. Step 4: Simplify right side
    323.75x = 82,993.10
  5. Step 5: Solve for x
    x = 82,993.10/323.75
  6. Step 6: Final answer
    x = 256.35

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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.