Finding the Fourth Proportional to 193.97, 291.14 and 91.32
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Solution
The fourth proportional to 193.97, 291.14 and 91.32 is: 137.07
Step by Step Solution
- Step 1: Write the proportion equation
193.97 : 291.14 = 91.32 : x - Step 2: Convert to fraction form
193.97/291.14 = 91.32/x - Step 3: Cross multiply
193.97x = 291.14 × 91.32 - Step 4: Simplify right side
193.97x = 26,586.45 - Step 5: Solve for x
x = 26,586.45/193.97 - Step 6: Final answer
x = 137.07
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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.