Finding the Fourth Proportional to 135.47, 202.90 and 115.99
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Solution
The fourth proportional to 135.47, 202.90 and 115.99 is: 173.72
Step by Step Solution
- Step 1: Write the proportion equation
135.47 : 202.90 = 115.99 : x - Step 2: Convert to fraction form
135.47/202.90 = 115.99/x - Step 3: Cross multiply
135.47x = 202.90 × 115.99 - Step 4: Simplify right side
135.47x = 23,534.37 - Step 5: Solve for x
x = 23,534.37/135.47 - Step 6: Final answer
x = 173.72
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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.