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Finding the Fourth Proportional to 324.82, 487.01 and 151.39

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Solution

The fourth proportional to 324.82, 487.01 and 151.39 is: 226.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    324.82 : 487.01 = 151.39 : x
  2. Step 2: Convert to fraction form
    324.82/487.01 = 151.39/x
  3. Step 3: Cross multiply
    324.82x = 487.01 × 151.39
  4. Step 4: Simplify right side
    324.82x = 73,729.43
  5. Step 5: Solve for x
    x = 73,729.43/324.82
  6. Step 6: Final answer
    x = 226.98

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.