Finding the Fourth Proportional to 219.49, 328.94 and 121.99
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Solution
The fourth proportional to 219.49, 328.94 and 121.99 is: 182.82
Step by Step Solution
- Step 1: Write the proportion equation
219.49 : 328.94 = 121.99 : x - Step 2: Convert to fraction form
219.49/328.94 = 121.99/x - Step 3: Cross multiply
219.49x = 328.94 × 121.99 - Step 4: Simplify right side
219.49x = 40,125.96 - Step 5: Solve for x
x = 40,125.96/219.49 - Step 6: Final answer
x = 182.82
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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.