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Finding the Fourth Proportional to 1,201.15, 1,798.93 and 1,181.08

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Solution

The fourth proportional to 1,201.15, 1,798.93 and 1,181.08 is: 1,768.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,201.15 : 1,798.93 = 1,181.08 : x
  2. Step 2: Convert to fraction form
    1,201.15/1,798.93 = 1,181.08/x
  3. Step 3: Cross multiply
    1,201.15x = 1,798.93 × 1,181.08
  4. Step 4: Simplify right side
    1,201.15x = 2,124,680.24
  5. Step 5: Solve for x
    x = 2,124,680.24/1,201.15
  6. Step 6: Final answer
    x = 1,768.87

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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.