Finding the Fourth Proportional to 108.36, 149.22 and 99
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Solution
The fourth proportional to 108.36, 149.22 and 99 is: 136.33
Step by Step Solution
- Step 1: Write the proportion equation
108.36 : 149.22 = 99 : x - Step 2: Convert to fraction form
108.36/149.22 = 99/x - Step 3: Cross multiply
108.36x = 149.22 × 99 - Step 4: Simplify right side
108.36x = 14,772.78 - Step 5: Solve for x
x = 14,772.78/108.36 - Step 6: Final answer
x = 136.33
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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.