Finding the Fourth Proportional to 112.64, 154.26 and 108.99
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Solution
The fourth proportional to 112.64, 154.26 and 108.99 is: 149.27
Step by Step Solution
- Step 1: Write the proportion equation
112.64 : 154.26 = 108.99 : x - Step 2: Convert to fraction form
112.64/154.26 = 108.99/x - Step 3: Cross multiply
112.64x = 154.26 × 108.99 - Step 4: Simplify right side
112.64x = 16,812.80 - Step 5: Solve for x
x = 16,812.80/112.64 - Step 6: Final answer
x = 149.27
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Why These Related Problems?
These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.