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Finding the Fourth Proportional to 1,898.80, 2,849.34 and 803.11

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Solution

The fourth proportional to 1,898.80, 2,849.34 and 803.11 is: 1,205.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,898.80 : 2,849.34 = 803.11 : x
  2. Step 2: Convert to fraction form
    1,898.80/2,849.34 = 803.11/x
  3. Step 3: Cross multiply
    1,898.80x = 2,849.34 × 803.11
  4. Step 4: Simplify right side
    1,898.80x = 2,288,333.45
  5. Step 5: Solve for x
    x = 2,288,333.45/1,898.80
  6. Step 6: Final answer
    x = 1,205.15

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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.