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Finding the Fourth Proportional to 1,806.65, 2,709.95 and 574.15

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Solution

The fourth proportional to 1,806.65, 2,709.95 and 574.15 is: 861.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,806.65 : 2,709.95 = 574.15 : x
  2. Step 2: Convert to fraction form
    1,806.65/2,709.95 = 574.15/x
  3. Step 3: Cross multiply
    1,806.65x = 2,709.95 × 574.15
  4. Step 4: Simplify right side
    1,806.65x = 1,555,904.24
  5. Step 5: Solve for x
    x = 1,555,904.24/1,806.65
  6. Step 6: Final answer
    x = 861.21

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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.