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Finding the Fourth Proportional to 324.64, 486.62 and 243.23

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Solution

The fourth proportional to 324.64, 486.62 and 243.23 is: 364.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    324.64 : 486.62 = 243.23 : x
  2. Step 2: Convert to fraction form
    324.64/486.62 = 243.23/x
  3. Step 3: Cross multiply
    324.64x = 486.62 × 243.23
  4. Step 4: Simplify right side
    324.64x = 118,359.37
  5. Step 5: Solve for x
    x = 118,359.37/324.64
  6. Step 6: Final answer
    x = 364.59

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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.