Finding the Fourth Proportional to 122.64, 184.99 and 117.60
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Solution
The fourth proportional to 122.64, 184.99 and 117.60 is: 177.39
Step by Step Solution
- Step 1: Write the proportion equation
122.64 : 184.99 = 117.60 : x - Step 2: Convert to fraction form
122.64/184.99 = 117.60/x - Step 3: Cross multiply
122.64x = 184.99 × 117.60 - Step 4: Simplify right side
122.64x = 21,754.82 - Step 5: Solve for x
x = 21,754.82/122.64 - Step 6: Final answer
x = 177.39
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Why These Related Problems?
These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.