Finding the Fourth Proportional to 135.64, 202.49 and 115.14
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Solution
The fourth proportional to 135.64, 202.49 and 115.14 is: 171.89
Step by Step Solution
- Step 1: Write the proportion equation
135.64 : 202.49 = 115.14 : x - Step 2: Convert to fraction form
135.64/202.49 = 115.14/x - Step 3: Cross multiply
135.64x = 202.49 × 115.14 - Step 4: Simplify right side
135.64x = 23,314.70 - Step 5: Solve for x
x = 23,314.70/135.64 - Step 6: Final answer
x = 171.89
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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.