Finding the Fourth Proportional to 135.25, 202.66 and 115.00
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Solution
The fourth proportional to 135.25, 202.66 and 115.00 is: 172.31
Step by Step Solution
- Step 1: Write the proportion equation
135.25 : 202.66 = 115.00 : x - Step 2: Convert to fraction form
135.25/202.66 = 115.00/x - Step 3: Cross multiply
135.25x = 202.66 × 115.00 - Step 4: Simplify right side
135.25x = 23,305.11 - Step 5: Solve for x
x = 23,305.11/135.25 - Step 6: Final answer
x = 172.31
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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.