Finding the Fourth Proportional to 226.35, 312.26 and 138.99
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Solution
The fourth proportional to 226.35, 312.26 and 138.99 is: 191.74
Step by Step Solution
- Step 1: Write the proportion equation
226.35 : 312.26 = 138.99 : x - Step 2: Convert to fraction form
226.35/312.26 = 138.99/x - Step 3: Cross multiply
226.35x = 312.26 × 138.99 - Step 4: Simplify right side
226.35x = 43,400.32 - Step 5: Solve for x
x = 43,400.32/226.35 - Step 6: Final answer
x = 191.74
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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.