Finding the Fourth Proportional to 395.76, 593.36 and 121.70
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Solution
The fourth proportional to 395.76, 593.36 and 121.70 is: 182.45
Step by Step Solution
- Step 1: Write the proportion equation
395.76 : 593.36 = 121.70 : x - Step 2: Convert to fraction form
395.76/593.36 = 121.70/x - Step 3: Cross multiply
395.76x = 593.36 × 121.70 - Step 4: Simplify right side
395.76x = 72,208.34 - Step 5: Solve for x
x = 72,208.34/395.76 - Step 6: Final answer
x = 182.45
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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.