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Finding the Fourth Proportional to 794.13, 1,189.77 and 559.63

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Solution

The fourth proportional to 794.13, 1,189.77 and 559.63 is: 838.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    794.13 : 1,189.77 = 559.63 : x
  2. Step 2: Convert to fraction form
    794.13/1,189.77 = 559.63/x
  3. Step 3: Cross multiply
    794.13x = 1,189.77 × 559.63
  4. Step 4: Simplify right side
    794.13x = 665,830.99
  5. Step 5: Solve for x
    x = 665,830.99/794.13
  6. Step 6: Final answer
    x = 838.44

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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.