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Finding the Fourth Proportional to 550.79, 825.46 and 412.75

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Solution

The fourth proportional to 550.79, 825.46 and 412.75 is: 618.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    550.79 : 825.46 = 412.75 : x
  2. Step 2: Convert to fraction form
    550.79/825.46 = 412.75/x
  3. Step 3: Cross multiply
    550.79x = 825.46 × 412.75
  4. Step 4: Simplify right side
    550.79x = 340,708.62
  5. Step 5: Solve for x
    x = 340,708.62/550.79
  6. Step 6: Final answer
    x = 618.58

Related Problems

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Double scale
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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.