Finding the Fourth Proportional to 94.17, 141.21 and 72.75
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Solution
The fourth proportional to 94.17, 141.21 and 72.75 is: 109.09
Step by Step Solution
- Step 1: Write the proportion equation
94.17 : 141.21 = 72.75 : x - Step 2: Convert to fraction form
94.17/141.21 = 72.75/x - Step 3: Cross multiply
94.17x = 141.21 × 72.75 - Step 4: Simplify right side
94.17x = 10,273.03 - Step 5: Solve for x
x = 10,273.03/94.17 - Step 6: Final answer
x = 109.09
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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.