Finding the Fourth Proportional to 115.97, 173.99 and 67.21
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Solution
The fourth proportional to 115.97, 173.99 and 67.21 is: 100.84
Step by Step Solution
- Step 1: Write the proportion equation
115.97 : 173.99 = 67.21 : x - Step 2: Convert to fraction form
115.97/173.99 = 67.21/x - Step 3: Cross multiply
115.97x = 173.99 × 67.21 - Step 4: Simplify right side
115.97x = 11,693.60 - Step 5: Solve for x
x = 11,693.60/115.97 - Step 6: Final answer
x = 100.84
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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.