Finding the Fourth Proportional to 220.74, 331.17 and 132.99
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Solution
The fourth proportional to 220.74, 331.17 and 132.99 is: 199.52
Step by Step Solution
- Step 1: Write the proportion equation
220.74 : 331.17 = 132.99 : x - Step 2: Convert to fraction form
220.74/331.17 = 132.99/x - Step 3: Cross multiply
220.74x = 331.17 × 132.99 - Step 4: Simplify right side
220.74x = 44,040.58 - Step 5: Solve for x
x = 44,040.58/220.74 - Step 6: Final answer
x = 199.52
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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.