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Finding the Fourth Proportional to 448.01, 671.11 and 216.21

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Solution

The fourth proportional to 448.01, 671.11 and 216.21 is: 323.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    448.01 : 671.11 = 216.21 : x
  2. Step 2: Convert to fraction form
    448.01/671.11 = 216.21/x
  3. Step 3: Cross multiply
    448.01x = 671.11 × 216.21
  4. Step 4: Simplify right side
    448.01x = 145,100.69
  5. Step 5: Solve for x
    x = 145,100.69/448.01
  6. Step 6: Final answer
    x = 323.88

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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.