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Finding the Fourth Proportional to 324.88, 487.62 and 162.69

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Solution

The fourth proportional to 324.88, 487.62 and 162.69 is: 244.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    324.88 : 487.62 = 162.69 : x
  2. Step 2: Convert to fraction form
    324.88/487.62 = 162.69/x
  3. Step 3: Cross multiply
    324.88x = 487.62 × 162.69
  4. Step 4: Simplify right side
    324.88x = 79,330.90
  5. Step 5: Solve for x
    x = 79,330.90/324.88
  6. Step 6: Final answer
    x = 244.19

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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.