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Finding the Fourth Proportional to 1,170.44, 1,755.96 and 440.22

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Solution

The fourth proportional to 1,170.44, 1,755.96 and 440.22 is: 660.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,170.44 : 1,755.96 = 440.22 : x
  2. Step 2: Convert to fraction form
    1,170.44/1,755.96 = 440.22/x
  3. Step 3: Cross multiply
    1,170.44x = 1,755.96 × 440.22
  4. Step 4: Simplify right side
    1,170.44x = 773,008.71
  5. Step 5: Solve for x
    x = 773,008.71/1,170.44
  6. Step 6: Final answer
    x = 660.44

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Double scale
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1.5x scale

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.