Finding the Fourth Proportional to 135.08, 201.58 and 119.70
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Solution
The fourth proportional to 135.08, 201.58 and 119.70 is: 178.63
Step by Step Solution
- Step 1: Write the proportion equation
135.08 : 201.58 = 119.70 : x - Step 2: Convert to fraction form
135.08/201.58 = 119.70/x - Step 3: Cross multiply
135.08x = 201.58 × 119.70 - Step 4: Simplify right side
135.08x = 24,129.13 - Step 5: Solve for x
x = 24,129.13/135.08 - Step 6: Final answer
x = 178.63
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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.