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Finding the Fourth Proportional to 793.51, 1,190.25 and 518.76

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Solution

The fourth proportional to 793.51, 1,190.25 and 518.76 is: 778.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    793.51 : 1,190.25 = 518.76 : x
  2. Step 2: Convert to fraction form
    793.51/1,190.25 = 518.76/x
  3. Step 3: Cross multiply
    793.51x = 1,190.25 × 518.76
  4. Step 4: Simplify right side
    793.51x = 617,454.09
  5. Step 5: Solve for x
    x = 617,454.09/793.51
  6. Step 6: Final answer
    x = 778.13

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Double scale
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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.