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Finding the Fourth Proportional to 324.78, 448.26 and 184.91

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Solution

The fourth proportional to 324.78, 448.26 and 184.91 is: 255.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    324.78 : 448.26 = 184.91 : x
  2. Step 2: Convert to fraction form
    324.78/448.26 = 184.91/x
  3. Step 3: Cross multiply
    324.78x = 448.26 × 184.91
  4. Step 4: Simplify right side
    324.78x = 82,885.52
  5. Step 5: Solve for x
    x = 82,885.52/324.78
  6. Step 6: Final answer
    x = 255.21

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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.