Finding the Fourth Proportional to 147.11, 220.94 and 122.75
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Solution
The fourth proportional to 147.11, 220.94 and 122.75 is: 184.34
Step by Step Solution
- Step 1: Write the proportion equation
147.11 : 220.94 = 122.75 : x - Step 2: Convert to fraction form
147.11/220.94 = 122.75/x - Step 3: Cross multiply
147.11x = 220.94 × 122.75 - Step 4: Simplify right side
147.11x = 27,118.67 - Step 5: Solve for x
x = 27,118.67/147.11 - Step 6: Final answer
x = 184.34
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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.