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Finding the Fourth Proportional to 1,571.73, 2,356.46 and 646.97

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Solution

The fourth proportional to 1,571.73, 2,356.46 and 646.97 is: 969.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,571.73 : 2,356.46 = 646.97 : x
  2. Step 2: Convert to fraction form
    1,571.73/2,356.46 = 646.97/x
  3. Step 3: Cross multiply
    1,571.73x = 2,356.46 × 646.97
  4. Step 4: Simplify right side
    1,571.73x = 1,524,546.34
  5. Step 5: Solve for x
    x = 1,524,546.34/1,571.73
  6. Step 6: Final answer
    x = 969.98

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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.