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Finding the Fourth Proportional to 2,299.89, 3,449.49 and 739.63

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Solution

The fourth proportional to 2,299.89, 3,449.49 and 739.63 is: 1,109.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,299.89 : 3,449.49 = 739.63 : x
  2. Step 2: Convert to fraction form
    2,299.89/3,449.49 = 739.63/x
  3. Step 3: Cross multiply
    2,299.89x = 3,449.49 × 739.63
  4. Step 4: Simplify right side
    2,299.89x = 2,551,347.83
  5. Step 5: Solve for x
    x = 2,551,347.83/2,299.89
  6. Step 6: Final answer
    x = 1,109.33

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1.5x scale

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.