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Finding the Fourth Proportional to 1,351.08, 2,026.08 and 620.46

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Solution

The fourth proportional to 1,351.08, 2,026.08 and 620.46 is: 930.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,351.08 : 2,026.08 = 620.46 : x
  2. Step 2: Convert to fraction form
    1,351.08/2,026.08 = 620.46/x
  3. Step 3: Cross multiply
    1,351.08x = 2,026.08 × 620.46
  4. Step 4: Simplify right side
    1,351.08x = 1,257,101.60
  5. Step 5: Solve for x
    x = 1,257,101.60/1,351.08
  6. Step 6: Final answer
    x = 930.44

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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.