Finding the Fourth Proportional to 220.57, 330.70 and 104.99
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Solution
The fourth proportional to 220.57, 330.70 and 104.99 is: 157.41
Step by Step Solution
- Step 1: Write the proportion equation
220.57 : 330.70 = 104.99 : x - Step 2: Convert to fraction form
220.57/330.70 = 104.99/x - Step 3: Cross multiply
220.57x = 330.70 × 104.99 - Step 4: Simplify right side
220.57x = 34,720.19 - Step 5: Solve for x
x = 34,720.19/220.57 - Step 6: Final answer
x = 157.41
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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.