Finding the Fourth Proportional to 94.26, 129.93 and 66.60
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Solution
The fourth proportional to 94.26, 129.93 and 66.60 is: 91.79
Step by Step Solution
- Step 1: Write the proportion equation
94.26 : 129.93 = 66.60 : x - Step 2: Convert to fraction form
94.26/129.93 = 66.60/x - Step 3: Cross multiply
94.26x = 129.93 × 66.60 - Step 4: Simplify right side
94.26x = 8,652.91 - Step 5: Solve for x
x = 8,652.91/94.26 - Step 6: Final answer
x = 91.79
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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.