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Finding the Fourth Proportional to 1,872.56, 2,808.81 and 574.00

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Solution

The fourth proportional to 1,872.56, 2,808.81 and 574.00 is: 860.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,872.56 : 2,808.81 = 574.00 : x
  2. Step 2: Convert to fraction form
    1,872.56/2,808.81 = 574.00/x
  3. Step 3: Cross multiply
    1,872.56x = 2,808.81 × 574.00
  4. Step 4: Simplify right side
    1,872.56x = 1,612,249.92
  5. Step 5: Solve for x
    x = 1,612,249.92/1,872.56
  6. Step 6: Final answer
    x = 860.99

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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.