Home / 850.15-1,273.60-438.27

Finding the Fourth Proportional to 850.15, 1,273.60 and 438.27

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Solution

The fourth proportional to 850.15, 1,273.60 and 438.27 is: 656.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    850.15 : 1,273.60 = 438.27 : x
  2. Step 2: Convert to fraction form
    850.15/1,273.60 = 438.27/x
  3. Step 3: Cross multiply
    850.15x = 1,273.60 × 438.27
  4. Step 4: Simplify right side
    850.15x = 558,180.67
  5. Step 5: Solve for x
    x = 558,180.67/850.15
  6. Step 6: Final answer
    x = 656.57

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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.