Finding the Fourth Proportional to 135.26, 202.99 and 87.16
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Solution
The fourth proportional to 135.26, 202.99 and 87.16 is: 130.80
Step by Step Solution
- Step 1: Write the proportion equation
135.26 : 202.99 = 87.16 : x - Step 2: Convert to fraction form
135.26/202.99 = 87.16/x - Step 3: Cross multiply
135.26x = 202.99 × 87.16 - Step 4: Simplify right side
135.26x = 17,692.61 - Step 5: Solve for x
x = 17,692.61/135.26 - Step 6: Final answer
x = 130.80
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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.