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Finding the Fourth Proportional to 662.09, 993.31 and 353.70

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Solution

The fourth proportional to 662.09, 993.31 and 353.70 is: 530.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    662.09 : 993.31 = 353.70 : x
  2. Step 2: Convert to fraction form
    662.09/993.31 = 353.70/x
  3. Step 3: Cross multiply
    662.09x = 993.31 × 353.70
  4. Step 4: Simplify right side
    662.09x = 351,334.85
  5. Step 5: Solve for x
    x = 351,334.85/662.09
  6. Step 6: Final answer
    x = 530.64

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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.