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Finding the Fourth Proportional to 662.63, 993.55 and 443.50

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Solution

The fourth proportional to 662.63, 993.55 and 443.50 is: 664.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    662.63 : 993.55 = 443.50 : x
  2. Step 2: Convert to fraction form
    662.63/993.55 = 443.50/x
  3. Step 3: Cross multiply
    662.63x = 993.55 × 443.50
  4. Step 4: Simplify right side
    662.63x = 440,639.43
  5. Step 5: Solve for x
    x = 440,639.43/662.63
  6. Step 6: Final answer
    x = 664.99

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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.