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Finding the Fourth Proportional to 662.67, 994.41 and 354.72

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Solution

The fourth proportional to 662.67, 994.41 and 354.72 is: 532.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    662.67 : 994.41 = 354.72 : x
  2. Step 2: Convert to fraction form
    662.67/994.41 = 354.72/x
  3. Step 3: Cross multiply
    662.67x = 994.41 × 354.72
  4. Step 4: Simplify right side
    662.67x = 352,737.12
  5. Step 5: Solve for x
    x = 352,737.12/662.67
  6. Step 6: Final answer
    x = 532.30

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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.