Finding the Fourth Proportional to 79.44, 119.26 and 68.68
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Solution
The fourth proportional to 79.44, 119.26 and 68.68 is: 103.10
Step by Step Solution
- Step 1: Write the proportion equation
79.44 : 119.26 = 68.68 : x - Step 2: Convert to fraction form
79.44/119.26 = 68.68/x - Step 3: Cross multiply
79.44x = 119.26 × 68.68 - Step 4: Simplify right side
79.44x = 8,190.31 - Step 5: Solve for x
x = 8,190.31/79.44 - Step 6: Final answer
x = 103.10
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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.