Finding the Fourth Proportional to 135.19, 202.58 and 120.75
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Solution
The fourth proportional to 135.19, 202.58 and 120.75 is: 180.94
Step by Step Solution
- Step 1: Write the proportion equation
135.19 : 202.58 = 120.75 : x - Step 2: Convert to fraction form
135.19/202.58 = 120.75/x - Step 3: Cross multiply
135.19x = 202.58 × 120.75 - Step 4: Simplify right side
135.19x = 24,461.54 - Step 5: Solve for x
x = 24,461.54/135.19 - Step 6: Final answer
x = 180.94
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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.