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Finding the Fourth Proportional to 1,196.21, 1,794.30 and 708.91

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Solution

The fourth proportional to 1,196.21, 1,794.30 and 708.91 is: 1,063.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,196.21 : 1,794.30 = 708.91 : x
  2. Step 2: Convert to fraction form
    1,196.21/1,794.30 = 708.91/x
  3. Step 3: Cross multiply
    1,196.21x = 1,794.30 × 708.91
  4. Step 4: Simplify right side
    1,196.21x = 1,271,997.21
  5. Step 5: Solve for x
    x = 1,271,997.21/1,196.21
  6. Step 6: Final answer
    x = 1,063.36

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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.