Finding the Fourth Proportional to 135.29, 202.97 and 74.39
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Solution
The fourth proportional to 135.29, 202.97 and 74.39 is: 111.61
Step by Step Solution
- Step 1: Write the proportion equation
135.29 : 202.97 = 74.39 : x - Step 2: Convert to fraction form
135.29/202.97 = 74.39/x - Step 3: Cross multiply
135.29x = 202.97 × 74.39 - Step 4: Simplify right side
135.29x = 15,099.35 - Step 5: Solve for x
x = 15,099.35/135.29 - Step 6: Final answer
x = 111.61
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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.