Finding the Fourth Proportional to 94.13, 141.21 and 66.99
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Solution
The fourth proportional to 94.13, 141.21 and 66.99 is: 100.50
Step by Step Solution
- Step 1: Write the proportion equation
94.13 : 141.21 = 66.99 : x - Step 2: Convert to fraction form
94.13/141.21 = 66.99/x - Step 3: Cross multiply
94.13x = 141.21 × 66.99 - Step 4: Simplify right side
94.13x = 9,459.66 - Step 5: Solve for x
x = 9,459.66/94.13 - Step 6: Final answer
x = 100.50
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.