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Finding the Fourth Proportional to 847.94, 1,273.46 and 782.87

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Solution

The fourth proportional to 847.94, 1,273.46 and 782.87 is: 1,175.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    847.94 : 1,273.46 = 782.87 : x
  2. Step 2: Convert to fraction form
    847.94/1,273.46 = 782.87/x
  3. Step 3: Cross multiply
    847.94x = 1,273.46 × 782.87
  4. Step 4: Simplify right side
    847.94x = 996,943.35
  5. Step 5: Solve for x
    x = 996,943.35/847.94
  6. Step 6: Final answer
    x = 1,175.73

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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.