Finding the Fourth Proportional to 220.62, 331.09 and 207.18
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Solution
The fourth proportional to 220.62, 331.09 and 207.18 is: 310.92
Step by Step Solution
- Step 1: Write the proportion equation
220.62 : 331.09 = 207.18 : x - Step 2: Convert to fraction form
220.62/331.09 = 207.18/x - Step 3: Cross multiply
220.62x = 331.09 × 207.18 - Step 4: Simplify right side
220.62x = 68,595.23 - Step 5: Solve for x
x = 68,595.23/220.62 - Step 6: Final answer
x = 310.92
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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.