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Finding the Fourth Proportional to 323.88, 445.80 and 236.40

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Solution

The fourth proportional to 323.88, 445.80 and 236.40 is: 325.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    323.88 : 445.80 = 236.40 : x
  2. Step 2: Convert to fraction form
    323.88/445.80 = 236.40/x
  3. Step 3: Cross multiply
    323.88x = 445.80 × 236.40
  4. Step 4: Simplify right side
    323.88x = 105,387.12
  5. Step 5: Solve for x
    x = 105,387.12/323.88
  6. Step 6: Final answer
    x = 325.39

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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.