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Finding the Fourth Proportional to 1,195.41, 1,791.63 and 830.10

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Solution

The fourth proportional to 1,195.41, 1,791.63 and 830.10 is: 1,244.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,195.41 : 1,791.63 = 830.10 : x
  2. Step 2: Convert to fraction form
    1,195.41/1,791.63 = 830.10/x
  3. Step 3: Cross multiply
    1,195.41x = 1,791.63 × 830.10
  4. Step 4: Simplify right side
    1,195.41x = 1,487,232.06
  5. Step 5: Solve for x
    x = 1,487,232.06/1,195.41
  6. Step 6: Final answer
    x = 1,244.12

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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.