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Finding the Fourth Proportional to 2,261.86, 3,392.99 and 618.41

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Solution

The fourth proportional to 2,261.86, 3,392.99 and 618.41 is: 927.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,261.86 : 3,392.99 = 618.41 : x
  2. Step 2: Convert to fraction form
    2,261.86/3,392.99 = 618.41/x
  3. Step 3: Cross multiply
    2,261.86x = 3,392.99 × 618.41
  4. Step 4: Simplify right side
    2,261.86x = 2,098,255.85
  5. Step 5: Solve for x
    x = 2,098,255.85/2,261.86
  6. Step 6: Final answer
    x = 927.67

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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.