Finding the Fourth Proportional to 202.18, 303.28 and 121
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Solution
The fourth proportional to 202.18, 303.28 and 121 is: 181.51
Step by Step Solution
- Step 1: Write the proportion equation
202.18 : 303.28 = 121 : x - Step 2: Convert to fraction form
202.18/303.28 = 121/x - Step 3: Cross multiply
202.18x = 303.28 × 121 - Step 4: Simplify right side
202.18x = 36,696.88 - Step 5: Solve for x
x = 36,696.88/202.18 - Step 6: Final answer
x = 181.51
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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.