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Finding the Fourth Proportional to 324.21, 484.29 and 236.81

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Solution

The fourth proportional to 324.21, 484.29 and 236.81 is: 353.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    324.21 : 484.29 = 236.81 : x
  2. Step 2: Convert to fraction form
    324.21/484.29 = 236.81/x
  3. Step 3: Cross multiply
    324.21x = 484.29 × 236.81
  4. Step 4: Simplify right side
    324.21x = 114,682.29
  5. Step 5: Solve for x
    x = 114,682.29/324.21
  6. Step 6: Final answer
    x = 353.73

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.