Finding the Fourth Proportional to 219.70, 303.18 and 121.44
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Solution
The fourth proportional to 219.70, 303.18 and 121.44 is: 167.58
Step by Step Solution
- Step 1: Write the proportion equation
219.70 : 303.18 = 121.44 : x - Step 2: Convert to fraction form
219.70/303.18 = 121.44/x - Step 3: Cross multiply
219.70x = 303.18 × 121.44 - Step 4: Simplify right side
219.70x = 36,818.18 - Step 5: Solve for x
x = 36,818.18/219.70 - Step 6: Final answer
x = 167.58
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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.