Finding the Fourth Proportional to 202.20, 303.21 and 121.20
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Solution
The fourth proportional to 202.20, 303.21 and 121.20 is: 181.75
Step by Step Solution
- Step 1: Write the proportion equation
202.20 : 303.21 = 121.20 : x - Step 2: Convert to fraction form
202.20/303.21 = 121.20/x - Step 3: Cross multiply
202.20x = 303.21 × 121.20 - Step 4: Simplify right side
202.20x = 36,749.05 - Step 5: Solve for x
x = 36,749.05/202.20 - Step 6: Final answer
x = 181.75
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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.