Finding the Fourth Proportional to 146.49, 202.15 and 80.99
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Solution
The fourth proportional to 146.49, 202.15 and 80.99 is: 111.76
Step by Step Solution
- Step 1: Write the proportion equation
146.49 : 202.15 = 80.99 : x - Step 2: Convert to fraction form
146.49/202.15 = 80.99/x - Step 3: Cross multiply
146.49x = 202.15 × 80.99 - Step 4: Simplify right side
146.49x = 16,372.13 - Step 5: Solve for x
x = 16,372.13/146.49 - Step 6: Final answer
x = 111.76
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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.