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Finding the Fourth Proportional to 1,960.21, 2,940.74 and 573.66

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Solution

The fourth proportional to 1,960.21, 2,940.74 and 573.66 is: 860.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,960.21 : 2,940.74 = 573.66 : x
  2. Step 2: Convert to fraction form
    1,960.21/2,940.74 = 573.66/x
  3. Step 3: Cross multiply
    1,960.21x = 2,940.74 × 573.66
  4. Step 4: Simplify right side
    1,960.21x = 1,686,984.91
  5. Step 5: Solve for x
    x = 1,686,984.91/1,960.21
  6. Step 6: Final answer
    x = 860.61

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.