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Finding the Fourth Proportional to 324.65, 448.24 and 262.76

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Solution

The fourth proportional to 324.65, 448.24 and 262.76 is: 362.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    324.65 : 448.24 = 262.76 : x
  2. Step 2: Convert to fraction form
    324.65/448.24 = 262.76/x
  3. Step 3: Cross multiply
    324.65x = 448.24 × 262.76
  4. Step 4: Simplify right side
    324.65x = 117,776.64
  5. Step 5: Solve for x
    x = 117,776.64/324.65
  6. Step 6: Final answer
    x = 362.78

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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.