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Finding the Fourth Proportional to 1,180.86, 1,770.21 and 440.33

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Solution

The fourth proportional to 1,180.86, 1,770.21 and 440.33 is: 660.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,180.86 : 1,770.21 = 440.33 : x
  2. Step 2: Convert to fraction form
    1,180.86/1,770.21 = 440.33/x
  3. Step 3: Cross multiply
    1,180.86x = 1,770.21 × 440.33
  4. Step 4: Simplify right side
    1,180.86x = 779,467.72
  5. Step 5: Solve for x
    x = 779,467.72/1,180.86
  6. Step 6: Final answer
    x = 660.08

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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.