Finding the Fourth Proportional to 226.41, 312.44 and 122.91
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Solution
The fourth proportional to 226.41, 312.44 and 122.91 is: 169.61
Step by Step Solution
- Step 1: Write the proportion equation
226.41 : 312.44 = 122.91 : x - Step 2: Convert to fraction form
226.41/312.44 = 122.91/x - Step 3: Cross multiply
226.41x = 312.44 × 122.91 - Step 4: Simplify right side
226.41x = 38,400.91 - Step 5: Solve for x
x = 38,400.91/226.41 - Step 6: Final answer
x = 169.61
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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.