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Finding the Fourth Proportional to 324.49, 447.78 and 177.11

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Solution

The fourth proportional to 324.49, 447.78 and 177.11 is: 244.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    324.49 : 447.78 = 177.11 : x
  2. Step 2: Convert to fraction form
    324.49/447.78 = 177.11/x
  3. Step 3: Cross multiply
    324.49x = 447.78 × 177.11
  4. Step 4: Simplify right side
    324.49x = 79,307.88
  5. Step 5: Solve for x
    x = 79,307.88/324.49
  6. Step 6: Final answer
    x = 244.41

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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.