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Finding the Fourth Proportional to 558.36, 835.73 and 412.05

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Solution

The fourth proportional to 558.36, 835.73 and 412.05 is: 616.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    558.36 : 835.73 = 412.05 : x
  2. Step 2: Convert to fraction form
    558.36/835.73 = 412.05/x
  3. Step 3: Cross multiply
    558.36x = 835.73 × 412.05
  4. Step 4: Simplify right side
    558.36x = 344,360.49
  5. Step 5: Solve for x
    x = 344,360.49/558.36
  6. Step 6: Final answer
    x = 616.74

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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.