Finding the Fourth Proportional to 310.99, 428.99 and 192.88
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Solution
The fourth proportional to 310.99, 428.99 and 192.88 is: 266.07
Step by Step Solution
- Step 1: Write the proportion equation
310.99 : 428.99 = 192.88 : x - Step 2: Convert to fraction form
310.99/428.99 = 192.88/x - Step 3: Cross multiply
310.99x = 428.99 × 192.88 - Step 4: Simplify right side
310.99x = 82,743.59 - Step 5: Solve for x
x = 82,743.59/310.99 - Step 6: Final answer
x = 266.07
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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.