Finding the Fourth Proportional to 135.61, 202.10 and 131.09
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Solution
The fourth proportional to 135.61, 202.10 and 131.09 is: 195.36
Step by Step Solution
- Step 1: Write the proportion equation
135.61 : 202.10 = 131.09 : x - Step 2: Convert to fraction form
135.61/202.10 = 131.09/x - Step 3: Cross multiply
135.61x = 202.10 × 131.09 - Step 4: Simplify right side
135.61x = 26,491.62 - Step 5: Solve for x
x = 26,491.62/135.61 - Step 6: Final answer
x = 195.36
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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.