Finding the Fourth Proportional to 82.92, 124.37 and 28.08
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Solution
The fourth proportional to 82.92, 124.37 and 28.08 is: 42.12
Step by Step Solution
- Step 1: Write the proportion equation
82.92 : 124.37 = 28.08 : x - Step 2: Convert to fraction form
82.92/124.37 = 28.08/x - Step 3: Cross multiply
82.92x = 124.37 × 28.08 - Step 4: Simplify right side
82.92x = 3,492.31 - Step 5: Solve for x
x = 3,492.31/82.92 - Step 6: Final answer
x = 42.12
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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.