Finding the Fourth Proportional to 135.53, 202.99 and 129.16
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Solution
The fourth proportional to 135.53, 202.99 and 129.16 is: 193.45
Step by Step Solution
- Step 1: Write the proportion equation
135.53 : 202.99 = 129.16 : x - Step 2: Convert to fraction form
135.53/202.99 = 129.16/x - Step 3: Cross multiply
135.53x = 202.99 × 129.16 - Step 4: Simplify right side
135.53x = 26,218.19 - Step 5: Solve for x
x = 26,218.19/135.53 - Step 6: Final answer
x = 193.45
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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.