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Finding the Fourth Proportional to 1,968.21, 2,952.45 and 669.51

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Solution

The fourth proportional to 1,968.21, 2,952.45 and 669.51 is: 1,004.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,968.21 : 2,952.45 = 669.51 : x
  2. Step 2: Convert to fraction form
    1,968.21/2,952.45 = 669.51/x
  3. Step 3: Cross multiply
    1,968.21x = 2,952.45 × 669.51
  4. Step 4: Simplify right side
    1,968.21x = 1,976,694.80
  5. Step 5: Solve for x
    x = 1,976,694.80/1,968.21
  6. Step 6: Final answer
    x = 1,004.31

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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.