Finding the Fourth Proportional to 135.50, 202.86 and 122.68
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Solution
The fourth proportional to 135.50, 202.86 and 122.68 is: 183.68
Step by Step Solution
- Step 1: Write the proportion equation
135.50 : 202.86 = 122.68 : x - Step 2: Convert to fraction form
135.50/202.86 = 122.68/x - Step 3: Cross multiply
135.50x = 202.86 × 122.68 - Step 4: Simplify right side
135.50x = 24,887.12 - Step 5: Solve for x
x = 24,887.12/135.50 - Step 6: Final answer
x = 183.68
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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.