Finding the Fourth Proportional to 318.88, 440.05 and 178.99
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Solution
The fourth proportional to 318.88, 440.05 and 178.99 is: 246.99
Step by Step Solution
- Step 1: Write the proportion equation
318.88 : 440.05 = 178.99 : x - Step 2: Convert to fraction form
318.88/440.05 = 178.99/x - Step 3: Cross multiply
318.88x = 440.05 × 178.99 - Step 4: Simplify right side
318.88x = 78,761.45 - Step 5: Solve for x
x = 78,761.45/318.88 - Step 6: Final answer
x = 246.99
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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.