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Finding the Fourth Proportional to 1,204.15, 1,804.10 and 838.23

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Solution

The fourth proportional to 1,204.15, 1,804.10 and 838.23 is: 1,255.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,204.15 : 1,804.10 = 838.23 : x
  2. Step 2: Convert to fraction form
    1,204.15/1,804.10 = 838.23/x
  3. Step 3: Cross multiply
    1,204.15x = 1,804.10 × 838.23
  4. Step 4: Simplify right side
    1,204.15x = 1,512,246.55
  5. Step 5: Solve for x
    x = 1,512,246.55/1,204.15
  6. Step 6: Final answer
    x = 1,255.86

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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.