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Finding the Fourth Proportional to 1,334.82, 2,001.96 and 969.78

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Solution

The fourth proportional to 1,334.82, 2,001.96 and 969.78 is: 1,454.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,334.82 : 2,001.96 = 969.78 : x
  2. Step 2: Convert to fraction form
    1,334.82/2,001.96 = 969.78/x
  3. Step 3: Cross multiply
    1,334.82x = 2,001.96 × 969.78
  4. Step 4: Simplify right side
    1,334.82x = 1,941,460.77
  5. Step 5: Solve for x
    x = 1,941,460.77/1,334.82
  6. Step 6: Final answer
    x = 1,454.47

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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.