Finding the Fourth Proportional to 226.25, 312.23 and 122.75
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Solution
The fourth proportional to 226.25, 312.23 and 122.75 is: 169.40
Step by Step Solution
- Step 1: Write the proportion equation
226.25 : 312.23 = 122.75 : x - Step 2: Convert to fraction form
226.25/312.23 = 122.75/x - Step 3: Cross multiply
226.25x = 312.23 × 122.75 - Step 4: Simplify right side
226.25x = 38,325.62 - Step 5: Solve for x
x = 38,325.62/226.25 - Step 6: Final answer
x = 169.40
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.