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Finding the Fourth Proportional to 613.15, 845.16 and 426.85

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Solution

The fourth proportional to 613.15, 845.16 and 426.85 is: 588.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    613.15 : 845.16 = 426.85 : x
  2. Step 2: Convert to fraction form
    613.15/845.16 = 426.85/x
  3. Step 3: Cross multiply
    613.15x = 845.16 × 426.85
  4. Step 4: Simplify right side
    613.15x = 360,756.55
  5. Step 5: Solve for x
    x = 360,756.55/613.15
  6. Step 6: Final answer
    x = 588.37

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1.5x scale

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.