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Finding the Fourth Proportional to 2,298.93, 3,449.75 and 838.20

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Solution

The fourth proportional to 2,298.93, 3,449.75 and 838.20 is: 1,257.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,298.93 : 3,449.75 = 838.20 : x
  2. Step 2: Convert to fraction form
    2,298.93/3,449.75 = 838.20/x
  3. Step 3: Cross multiply
    2,298.93x = 3,449.75 × 838.20
  4. Step 4: Simplify right side
    2,298.93x = 2,891,580.45
  5. Step 5: Solve for x
    x = 2,891,580.45/2,298.93
  6. Step 6: Final answer
    x = 1,257.79

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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.