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Finding the Fourth Proportional to 1,806.36, 2,709.30 and 573.90

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Solution

The fourth proportional to 1,806.36, 2,709.30 and 573.90 is: 860.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,806.36 : 2,709.30 = 573.90 : x
  2. Step 2: Convert to fraction form
    1,806.36/2,709.30 = 573.90/x
  3. Step 3: Cross multiply
    1,806.36x = 2,709.30 × 573.90
  4. Step 4: Simplify right side
    1,806.36x = 1,554,867.27
  5. Step 5: Solve for x
    x = 1,554,867.27/1,806.36
  6. Step 6: Final answer
    x = 860.77

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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.