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Finding the Fourth Proportional to 2,241.18, 3,361.32 and 660.08

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Solution

The fourth proportional to 2,241.18, 3,361.32 and 660.08 is: 989.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,241.18 : 3,361.32 = 660.08 : x
  2. Step 2: Convert to fraction form
    2,241.18/3,361.32 = 660.08/x
  3. Step 3: Cross multiply
    2,241.18x = 3,361.32 × 660.08
  4. Step 4: Simplify right side
    2,241.18x = 2,218,740.11
  5. Step 5: Solve for x
    x = 2,218,740.11/2,241.18
  6. Step 6: Final answer
    x = 989.99

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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.