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Finding the Fourth Proportional to 443.22, 664.16 and 248.15

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Solution

The fourth proportional to 443.22, 664.16 and 248.15 is: 371.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    443.22 : 664.16 = 248.15 : x
  2. Step 2: Convert to fraction form
    443.22/664.16 = 248.15/x
  3. Step 3: Cross multiply
    443.22x = 664.16 × 248.15
  4. Step 4: Simplify right side
    443.22x = 164,806.74
  5. Step 5: Solve for x
    x = 164,806.74/443.22
  6. Step 6: Final answer
    x = 371.84

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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.