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Finding the Fourth Proportional to 662.63, 993.21 and 296.91

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Solution

The fourth proportional to 662.63, 993.21 and 296.91 is: 445.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    662.63 : 993.21 = 296.91 : x
  2. Step 2: Convert to fraction form
    662.63/993.21 = 296.91/x
  3. Step 3: Cross multiply
    662.63x = 993.21 × 296.91
  4. Step 4: Simplify right side
    662.63x = 294,893.98
  5. Step 5: Solve for x
    x = 294,893.98/662.63
  6. Step 6: Final answer
    x = 445.04

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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.