Finding the Fourth Proportional to 135.44, 202.98 and 70.39
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Solution
The fourth proportional to 135.44, 202.98 and 70.39 is: 105.48
Step by Step Solution
- Step 1: Write the proportion equation
135.44 : 202.98 = 70.39 : x - Step 2: Convert to fraction form
135.44/202.98 = 70.39/x - Step 3: Cross multiply
135.44x = 202.98 × 70.39 - Step 4: Simplify right side
135.44x = 14,286.75 - Step 5: Solve for x
x = 14,286.75/135.44 - Step 6: Final answer
x = 105.48
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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.