Finding the Fourth Proportional to 121.08, 181.67 and 48.99
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Solution
The fourth proportional to 121.08, 181.67 and 48.99 is: 73.51
Step by Step Solution
- Step 1: Write the proportion equation
121.08 : 181.67 = 48.99 : x - Step 2: Convert to fraction form
121.08/181.67 = 48.99/x - Step 3: Cross multiply
121.08x = 181.67 × 48.99 - Step 4: Simplify right side
121.08x = 8,900.01 - Step 5: Solve for x
x = 8,900.01/121.08 - Step 6: Final answer
x = 73.51
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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.