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Finding the Fourth Proportional to 1,351.35, 2,026.04 and 426.39

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Solution

The fourth proportional to 1,351.35, 2,026.04 and 426.39 is: 639.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,351.35 : 2,026.04 = 426.39 : x
  2. Step 2: Convert to fraction form
    1,351.35/2,026.04 = 426.39/x
  3. Step 3: Cross multiply
    1,351.35x = 2,026.04 × 426.39
  4. Step 4: Simplify right side
    1,351.35x = 863,881.06
  5. Step 5: Solve for x
    x = 863,881.06/1,351.35
  6. Step 6: Final answer
    x = 639.27

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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.