Finding the Fourth Proportional to 347.09, 518.09 and 306.08
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Solution
The fourth proportional to 347.09, 518.09 and 306.08 is: 456.88
Step by Step Solution
- Step 1: Write the proportion equation
347.09 : 518.09 = 306.08 : x - Step 2: Convert to fraction form
347.09/518.09 = 306.08/x - Step 3: Cross multiply
347.09x = 518.09 × 306.08 - Step 4: Simplify right side
347.09x = 158,576.99 - Step 5: Solve for x
x = 158,576.99/347.09 - Step 6: Final answer
x = 456.88
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Why These Related Problems?
These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.