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Finding the Fourth Proportional to 447.51, 671.02 and 215.95

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Solution

The fourth proportional to 447.51, 671.02 and 215.95 is: 323.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    447.51 : 671.02 = 215.95 : x
  2. Step 2: Convert to fraction form
    447.51/671.02 = 215.95/x
  3. Step 3: Cross multiply
    447.51x = 671.02 × 215.95
  4. Step 4: Simplify right side
    447.51x = 144,906.77
  5. Step 5: Solve for x
    x = 144,906.77/447.51
  6. Step 6: Final answer
    x = 323.81

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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.