Finding the Fourth Proportional to 154.11, 231.21 and 68.67
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Solution
The fourth proportional to 154.11, 231.21 and 68.67 is: 103.03
Step by Step Solution
- Step 1: Write the proportion equation
154.11 : 231.21 = 68.67 : x - Step 2: Convert to fraction form
154.11/231.21 = 68.67/x - Step 3: Cross multiply
154.11x = 231.21 × 68.67 - Step 4: Simplify right side
154.11x = 15,877.19 - Step 5: Solve for x
x = 15,877.19/154.11 - Step 6: Final answer
x = 103.03
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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.