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Finding the Fourth Proportional to 778.58, 1,168.28 and 504.60

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Solution

The fourth proportional to 778.58, 1,168.28 and 504.60 is: 757.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    778.58 : 1,168.28 = 504.60 : x
  2. Step 2: Convert to fraction form
    778.58/1,168.28 = 504.60/x
  3. Step 3: Cross multiply
    778.58x = 1,168.28 × 504.60
  4. Step 4: Simplify right side
    778.58x = 589,511.57
  5. Step 5: Solve for x
    x = 589,511.57/778.58
  6. Step 6: Final answer
    x = 757.17

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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.