Finding the Fourth Proportional to 318.99, 478.09 and 182.12
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Solution
The fourth proportional to 318.99, 478.09 and 182.12 is: 272.95
Step by Step Solution
- Step 1: Write the proportion equation
318.99 : 478.09 = 182.12 : x - Step 2: Convert to fraction form
318.99/478.09 = 182.12/x - Step 3: Cross multiply
318.99x = 478.09 × 182.12 - Step 4: Simplify right side
318.99x = 87,069.75 - Step 5: Solve for x
x = 87,069.75/318.99 - Step 6: Final answer
x = 272.95
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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.