Finding the Fourth Proportional to 302.99, 418.19 and 198.20
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Solution
The fourth proportional to 302.99, 418.19 and 198.20 is: 273.55
Step by Step Solution
- Step 1: Write the proportion equation
302.99 : 418.19 = 198.20 : x - Step 2: Convert to fraction form
302.99/418.19 = 198.20/x - Step 3: Cross multiply
302.99x = 418.19 × 198.20 - Step 4: Simplify right side
302.99x = 82,882.18 - Step 5: Solve for x
x = 82,882.18/302.99 - Step 6: Final answer
x = 273.55
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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.