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Finding the Fourth Proportional to 1,898.67, 2,849.31 and 803.15

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Solution

The fourth proportional to 1,898.67, 2,849.31 and 803.15 is: 1,205.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,898.67 : 2,849.31 = 803.15 : x
  2. Step 2: Convert to fraction form
    1,898.67/2,849.31 = 803.15/x
  3. Step 3: Cross multiply
    1,898.67x = 2,849.31 × 803.15
  4. Step 4: Simplify right side
    1,898.67x = 2,288,409.08
  5. Step 5: Solve for x
    x = 2,288,409.08/1,898.67
  6. Step 6: Final answer
    x = 1,205.27

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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.