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Finding the Fourth Proportional to 1,578.56, 2,366.07 and 537.59

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Solution

The fourth proportional to 1,578.56, 2,366.07 and 537.59 is: 805.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,578.56 : 2,366.07 = 537.59 : x
  2. Step 2: Convert to fraction form
    1,578.56/2,366.07 = 537.59/x
  3. Step 3: Cross multiply
    1,578.56x = 2,366.07 × 537.59
  4. Step 4: Simplify right side
    1,578.56x = 1,271,975.57
  5. Step 5: Solve for x
    x = 1,271,975.57/1,578.56
  6. Step 6: Final answer
    x = 805.78

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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.