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Finding the Fourth Proportional to 1,601.22, 2,401.40 and 613.82

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Solution

The fourth proportional to 1,601.22, 2,401.40 and 613.82 is: 920.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,601.22 : 2,401.40 = 613.82 : x
  2. Step 2: Convert to fraction form
    1,601.22/2,401.40 = 613.82/x
  3. Step 3: Cross multiply
    1,601.22x = 2,401.40 × 613.82
  4. Step 4: Simplify right side
    1,601.22x = 1,474,027.35
  5. Step 5: Solve for x
    x = 1,474,027.35/1,601.22
  6. Step 6: Final answer
    x = 920.57

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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.