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Finding the Fourth Proportional to 578.23, 798.74 and 550.90

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Solution

The fourth proportional to 578.23, 798.74 and 550.90 is: 760.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    578.23 : 798.74 = 550.90 : x
  2. Step 2: Convert to fraction form
    578.23/798.74 = 550.90/x
  3. Step 3: Cross multiply
    578.23x = 798.74 × 550.90
  4. Step 4: Simplify right side
    578.23x = 440,025.87
  5. Step 5: Solve for x
    x = 440,025.87/578.23
  6. Step 6: Final answer
    x = 760.99

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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.