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Finding the Fourth Proportional to 1,181.03, 1,629.99 and 683.69

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Solution

The fourth proportional to 1,181.03, 1,629.99 and 683.69 is: 943.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,181.03 : 1,629.99 = 683.69 : x
  2. Step 2: Convert to fraction form
    1,181.03/1,629.99 = 683.69/x
  3. Step 3: Cross multiply
    1,181.03x = 1,629.99 × 683.69
  4. Step 4: Simplify right side
    1,181.03x = 1,114,399.71
  5. Step 5: Solve for x
    x = 1,114,399.71/1,181.03
  6. Step 6: Final answer
    x = 943.59

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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.