Finding the Fourth Proportional to 193.79, 266.99 and 138.44
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Solution
The fourth proportional to 193.79, 266.99 and 138.44 is: 190.73
Step by Step Solution
- Step 1: Write the proportion equation
193.79 : 266.99 = 138.44 : x - Step 2: Convert to fraction form
193.79/266.99 = 138.44/x - Step 3: Cross multiply
193.79x = 266.99 × 138.44 - Step 4: Simplify right side
193.79x = 36,962.07 - Step 5: Solve for x
x = 36,962.07/193.79 - Step 6: Final answer
x = 190.73
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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.