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Finding the Fourth Proportional to 550.20, 824.68 and 485.26

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Solution

The fourth proportional to 550.20, 824.68 and 485.26 is: 727.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    550.20 : 824.68 = 485.26 : x
  2. Step 2: Convert to fraction form
    550.20/824.68 = 485.26/x
  3. Step 3: Cross multiply
    550.20x = 824.68 × 485.26
  4. Step 4: Simplify right side
    550.20x = 400,184.22
  5. Step 5: Solve for x
    x = 400,184.22/550.20
  6. Step 6: Final answer
    x = 727.34

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1.5x scale

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.