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Finding the Fourth Proportional to 1,468.44, 2,201.70 and 646.80

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Solution

The fourth proportional to 1,468.44, 2,201.70 and 646.80 is: 969.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,468.44 : 2,201.70 = 646.80 : x
  2. Step 2: Convert to fraction form
    1,468.44/2,201.70 = 646.80/x
  3. Step 3: Cross multiply
    1,468.44x = 2,201.70 × 646.80
  4. Step 4: Simplify right side
    1,468.44x = 1,424,059.56
  5. Step 5: Solve for x
    x = 1,424,059.56/1,468.44
  6. Step 6: Final answer
    x = 969.78

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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.