Finding the Fourth Proportional to 310.44, 428.36 and 186.08
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Solution
The fourth proportional to 310.44, 428.36 and 186.08 is: 256.76
Step by Step Solution
- Step 1: Write the proportion equation
310.44 : 428.36 = 186.08 : x - Step 2: Convert to fraction form
310.44/428.36 = 186.08/x - Step 3: Cross multiply
310.44x = 428.36 × 186.08 - Step 4: Simplify right side
310.44x = 79,709.23 - Step 5: Solve for x
x = 79,709.23/310.44 - Step 6: Final answer
x = 256.76
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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.