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Finding the Fourth Proportional to 669.88, 997.46 and 662.53

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Solution

The fourth proportional to 669.88, 997.46 and 662.53 is: 986.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    669.88 : 997.46 = 662.53 : x
  2. Step 2: Convert to fraction form
    669.88/997.46 = 662.53/x
  3. Step 3: Cross multiply
    669.88x = 997.46 × 662.53
  4. Step 4: Simplify right side
    669.88x = 660,846.34
  5. Step 5: Solve for x
    x = 660,846.34/669.88
  6. Step 6: Final answer
    x = 986.52

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.