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Finding the Fourth Proportional to 2,066, 3,099.49 and 698

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Solution

The fourth proportional to 2,066, 3,099.49 and 698 is: 1,047.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,066 : 3,099.49 = 698 : x
  2. Step 2: Convert to fraction form
    2,066/3,099.49 = 698/x
  3. Step 3: Cross multiply
    2,066x = 3,099.49 × 698
  4. Step 4: Simplify right side
    2,066x = 2,163,444.02
  5. Step 5: Solve for x
    x = 2,163,444.02/2,066
  6. Step 6: Final answer
    x = 1,047.17

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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.