Finding the Fourth Proportional to 205.18, 283.08 and 121.11
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Solution
The fourth proportional to 205.18, 283.08 and 121.11 is: 167.09
Step by Step Solution
- Step 1: Write the proportion equation
205.18 : 283.08 = 121.11 : x - Step 2: Convert to fraction form
205.18/283.08 = 121.11/x - Step 3: Cross multiply
205.18x = 283.08 × 121.11 - Step 4: Simplify right side
205.18x = 34,284.12 - Step 5: Solve for x
x = 34,284.12/205.18 - Step 6: Final answer
x = 167.09
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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.