Finding the Fourth Proportional to 219.99, 329.94 and 89.99
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Solution
The fourth proportional to 219.99, 329.94 and 89.99 is: 134.97
Step by Step Solution
- Step 1: Write the proportion equation
219.99 : 329.94 = 89.99 : x - Step 2: Convert to fraction form
219.99/329.94 = 89.99/x - Step 3: Cross multiply
219.99x = 329.94 × 89.99 - Step 4: Simplify right side
219.99x = 29,691.30 - Step 5: Solve for x
x = 29,691.30/219.99 - Step 6: Final answer
x = 134.97
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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.