Finding the Fourth Proportional to 146.40, 202.08 and 102.88
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Solution
The fourth proportional to 146.40, 202.08 and 102.88 is: 142.01
Step by Step Solution
- Step 1: Write the proportion equation
146.40 : 202.08 = 102.88 : x - Step 2: Convert to fraction form
146.40/202.08 = 102.88/x - Step 3: Cross multiply
146.40x = 202.08 × 102.88 - Step 4: Simplify right side
146.40x = 20,789.99 - Step 5: Solve for x
x = 20,789.99/146.40 - Step 6: Final answer
x = 142.01
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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.