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Finding the Fourth Proportional to 1,578.68, 2,367.98 and 849.68

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Solution

The fourth proportional to 1,578.68, 2,367.98 and 849.68 is: 1,274.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,578.68 : 2,367.98 = 849.68 : x
  2. Step 2: Convert to fraction form
    1,578.68/2,367.98 = 849.68/x
  3. Step 3: Cross multiply
    1,578.68x = 2,367.98 × 849.68
  4. Step 4: Simplify right side
    1,578.68x = 2,012,025.25
  5. Step 5: Solve for x
    x = 2,012,025.25/1,578.68
  6. Step 6: Final answer
    x = 1,274.50

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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.