Finding the Fourth Proportional to 226.08, 311.99 and 122.58
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Solution
The fourth proportional to 226.08, 311.99 and 122.58 is: 169.16
Step by Step Solution
- Step 1: Write the proportion equation
226.08 : 311.99 = 122.58 : x - Step 2: Convert to fraction form
226.08/311.99 = 122.58/x - Step 3: Cross multiply
226.08x = 311.99 × 122.58 - Step 4: Simplify right side
226.08x = 38,243.58 - Step 5: Solve for x
x = 38,243.58/226.08 - Step 6: Final answer
x = 169.16
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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.