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Finding the Fourth Proportional to 2,990.51, 4,485.41 and 799.41

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Solution

The fourth proportional to 2,990.51, 4,485.41 and 799.41 is: 1,199.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,990.51 : 4,485.41 = 799.41 : x
  2. Step 2: Convert to fraction form
    2,990.51/4,485.41 = 799.41/x
  3. Step 3: Cross multiply
    2,990.51x = 4,485.41 × 799.41
  4. Step 4: Simplify right side
    2,990.51x = 3,585,672.39
  5. Step 5: Solve for x
    x = 3,585,672.39/2,990.51
  6. Step 6: Final answer
    x = 1,199.02

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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.