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Finding the Fourth Proportional to 793.77, 1,095.39 and 439.68

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Solution

The fourth proportional to 793.77, 1,095.39 and 439.68 is: 606.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    793.77 : 1,095.39 = 439.68 : x
  2. Step 2: Convert to fraction form
    793.77/1,095.39 = 439.68/x
  3. Step 3: Cross multiply
    793.77x = 1,095.39 × 439.68
  4. Step 4: Simplify right side
    793.77x = 481,621.08
  5. Step 5: Solve for x
    x = 481,621.08/793.77
  6. Step 6: Final answer
    x = 606.75

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.