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Finding the Fourth Proportional to 830.29, 1,144.91 and 550.44

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Solution

The fourth proportional to 830.29, 1,144.91 and 550.44 is: 759.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    830.29 : 1,144.91 = 550.44 : x
  2. Step 2: Convert to fraction form
    830.29/1,144.91 = 550.44/x
  3. Step 3: Cross multiply
    830.29x = 1,144.91 × 550.44
  4. Step 4: Simplify right side
    830.29x = 630,198.54
  5. Step 5: Solve for x
    x = 630,198.54/830.29
  6. Step 6: Final answer
    x = 759.01

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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.