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Finding the Fourth Proportional to 1,680.60, 2,519.82 and 706.44

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Solution

The fourth proportional to 1,680.60, 2,519.82 and 706.44 is: 1,059.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,680.60 : 2,519.82 = 706.44 : x
  2. Step 2: Convert to fraction form
    1,680.60/2,519.82 = 706.44/x
  3. Step 3: Cross multiply
    1,680.60x = 2,519.82 × 706.44
  4. Step 4: Simplify right side
    1,680.60x = 1,780,101.64
  5. Step 5: Solve for x
    x = 1,780,101.64/1,680.60
  6. Step 6: Final answer
    x = 1,059.21

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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.