Finding the Fourth Proportional to 193.36, 290.08 and 85.09
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Solution
The fourth proportional to 193.36, 290.08 and 85.09 is: 127.65
Step by Step Solution
- Step 1: Write the proportion equation
193.36 : 290.08 = 85.09 : x - Step 2: Convert to fraction form
193.36/290.08 = 85.09/x - Step 3: Cross multiply
193.36x = 290.08 × 85.09 - Step 4: Simplify right side
193.36x = 24,682.91 - Step 5: Solve for x
x = 24,682.91/193.36 - Step 6: Final answer
x = 127.65
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.