Finding the Fourth Proportional to 108.14, 149.26 and 66.68
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Solution
The fourth proportional to 108.14, 149.26 and 66.68 is: 92.03
Step by Step Solution
- Step 1: Write the proportion equation
108.14 : 149.26 = 66.68 : x - Step 2: Convert to fraction form
108.14/149.26 = 66.68/x - Step 3: Cross multiply
108.14x = 149.26 × 66.68 - Step 4: Simplify right side
108.14x = 9,952.66 - Step 5: Solve for x
x = 9,952.66/108.14 - Step 6: Final answer
x = 92.03
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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.