Finding the Fourth Proportional to 135.28, 202.88 and 104.88
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Solution
The fourth proportional to 135.28, 202.88 and 104.88 is: 157.29
Step by Step Solution
- Step 1: Write the proportion equation
135.28 : 202.88 = 104.88 : x - Step 2: Convert to fraction form
135.28/202.88 = 104.88/x - Step 3: Cross multiply
135.28x = 202.88 × 104.88 - Step 4: Simplify right side
135.28x = 21,278.05 - Step 5: Solve for x
x = 21,278.05/135.28 - Step 6: Final answer
x = 157.29
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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.