Finding the Fourth Proportional to 310.99, 428.75 and 237.18
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Solution
The fourth proportional to 310.99, 428.75 and 237.18 is: 326.99
Step by Step Solution
- Step 1: Write the proportion equation
310.99 : 428.75 = 237.18 : x - Step 2: Convert to fraction form
310.99/428.75 = 237.18/x - Step 3: Cross multiply
310.99x = 428.75 × 237.18 - Step 4: Simplify right side
310.99x = 101,690.93 - Step 5: Solve for x
x = 101,690.93/310.99 - Step 6: Final answer
x = 326.99
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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.