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Finding the Fourth Proportional to 324.96, 448.28 and 262.64

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Solution

The fourth proportional to 324.96, 448.28 and 262.64 is: 362.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    324.96 : 448.28 = 262.64 : x
  2. Step 2: Convert to fraction form
    324.96/448.28 = 262.64/x
  3. Step 3: Cross multiply
    324.96x = 448.28 × 262.64
  4. Step 4: Simplify right side
    324.96x = 117,736.26
  5. Step 5: Solve for x
    x = 117,736.26/324.96
  6. Step 6: Final answer
    x = 362.31

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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.