Finding the Fourth Proportional to 108.19, 149.26 and 66.71
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Solution
The fourth proportional to 108.19, 149.26 and 66.71 is: 92.03
Step by Step Solution
- Step 1: Write the proportion equation
108.19 : 149.26 = 66.71 : x - Step 2: Convert to fraction form
108.19/149.26 = 66.71/x - Step 3: Cross multiply
108.19x = 149.26 × 66.71 - Step 4: Simplify right side
108.19x = 9,957.13 - Step 5: Solve for x
x = 9,957.13/108.19 - 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.