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Finding the Fourth Proportional to 1,805.81, 2,708.54 and 574.03

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Solution

The fourth proportional to 1,805.81, 2,708.54 and 574.03 is: 860.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,805.81 : 2,708.54 = 574.03 : x
  2. Step 2: Convert to fraction form
    1,805.81/2,708.54 = 574.03/x
  3. Step 3: Cross multiply
    1,805.81x = 2,708.54 × 574.03
  4. Step 4: Simplify right side
    1,805.81x = 1,554,777.88
  5. Step 5: Solve for x
    x = 1,554,777.88/1,805.81
  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.