Finding the Fourth Proportional to 193.81, 290.70 and 135.87
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Solution
The fourth proportional to 193.81, 290.70 and 135.87 is: 203.79
Step by Step Solution
- Step 1: Write the proportion equation
193.81 : 290.70 = 135.87 : x - Step 2: Convert to fraction form
193.81/290.70 = 135.87/x - Step 3: Cross multiply
193.81x = 290.70 × 135.87 - Step 4: Simplify right side
193.81x = 39,497.41 - Step 5: Solve for x
x = 39,497.41/193.81 - Step 6: Final answer
x = 203.79
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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.