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Finding the Fourth Proportional to 324.28, 448.00 and 212.51

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Solution

The fourth proportional to 324.28, 448.00 and 212.51 is: 293.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    324.28 : 448.00 = 212.51 : x
  2. Step 2: Convert to fraction form
    324.28/448.00 = 212.51/x
  3. Step 3: Cross multiply
    324.28x = 448.00 × 212.51
  4. Step 4: Simplify right side
    324.28x = 95,205.17
  5. Step 5: Solve for x
    x = 95,205.17/324.28
  6. Step 6: Final answer
    x = 293.59

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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.