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Finding the Fourth Proportional to 1,661.28, 2,292.96 and 963.04

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Solution

The fourth proportional to 1,661.28, 2,292.96 and 963.04 is: 1,329.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,661.28 : 2,292.96 = 963.04 : x
  2. Step 2: Convert to fraction form
    1,661.28/2,292.96 = 963.04/x
  3. Step 3: Cross multiply
    1,661.28x = 2,292.96 × 963.04
  4. Step 4: Simplify right side
    1,661.28x = 2,208,212.20
  5. Step 5: Solve for x
    x = 2,208,212.20/1,661.28
  6. Step 6: Final answer
    x = 1,329.22

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.