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Finding the Fourth Proportional to 794.24, 1,190.56 and 520.88

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Solution

The fourth proportional to 794.24, 1,190.56 and 520.88 is: 780.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    794.24 : 1,190.56 = 520.88 : x
  2. Step 2: Convert to fraction form
    794.24/1,190.56 = 520.88/x
  3. Step 3: Cross multiply
    794.24x = 1,190.56 × 520.88
  4. Step 4: Simplify right side
    794.24x = 620,138.89
  5. Step 5: Solve for x
    x = 620,138.89/794.24
  6. Step 6: Final answer
    x = 780.80

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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.