Finding the Fourth Proportional to 193.72, 290.58 and 71.99
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Solution
The fourth proportional to 193.72, 290.58 and 71.99 is: 107.99
Step by Step Solution
- Step 1: Write the proportion equation
193.72 : 290.58 = 71.99 : x - Step 2: Convert to fraction form
193.72/290.58 = 71.99/x - Step 3: Cross multiply
193.72x = 290.58 × 71.99 - Step 4: Simplify right side
193.72x = 20,918.85 - Step 5: Solve for x
x = 20,918.85/193.72 - Step 6: Final answer
x = 107.99
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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.