Finding the Fourth Proportional to 220.99, 304.84 and 137.99
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Solution
The fourth proportional to 220.99, 304.84 and 137.99 is: 190.35
Step by Step Solution
- Step 1: Write the proportion equation
220.99 : 304.84 = 137.99 : x - Step 2: Convert to fraction form
220.99/304.84 = 137.99/x - Step 3: Cross multiply
220.99x = 304.84 × 137.99 - Step 4: Simplify right side
220.99x = 42,065.29 - Step 5: Solve for x
x = 42,065.29/220.99 - Step 6: Final answer
x = 190.35
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.