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Finding the Fourth Proportional to 448, 671.82 and 216.70

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Solution

The fourth proportional to 448, 671.82 and 216.70 is: 324.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    448 : 671.82 = 216.70 : x
  2. Step 2: Convert to fraction form
    448/671.82 = 216.70/x
  3. Step 3: Cross multiply
    448x = 671.82 × 216.70
  4. Step 4: Simplify right side
    448x = 145,583.39
  5. Step 5: Solve for x
    x = 145,583.39/448
  6. Step 6: Final answer
    x = 324.96

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.