Finding the Fourth Proportional to 135.50, 202.26 and 108.40
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Solution
The fourth proportional to 135.50, 202.26 and 108.40 is: 161.81
Step by Step Solution
- Step 1: Write the proportion equation
135.50 : 202.26 = 108.40 : x - Step 2: Convert to fraction form
135.50/202.26 = 108.40/x - Step 3: Cross multiply
135.50x = 202.26 × 108.40 - Step 4: Simplify right side
135.50x = 21,924.98 - Step 5: Solve for x
x = 21,924.98/135.50 - Step 6: Final answer
x = 161.81
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Why These Related Problems?
These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.