Finding the Fourth Proportional to 318.94, 478.49 and 181.99
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Solution
The fourth proportional to 318.94, 478.49 and 181.99 is: 273.03
Step by Step Solution
- Step 1: Write the proportion equation
318.94 : 478.49 = 181.99 : x - Step 2: Convert to fraction form
318.94/478.49 = 181.99/x - Step 3: Cross multiply
318.94x = 478.49 × 181.99 - Step 4: Simplify right side
318.94x = 87,080.40 - Step 5: Solve for x
x = 87,080.40/318.94 - Step 6: Final answer
x = 273.03
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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.