Finding the Fourth Proportional to 133.06, 183.84 and 122.80
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Solution
The fourth proportional to 133.06, 183.84 and 122.80 is: 169.66
Step by Step Solution
- Step 1: Write the proportion equation
133.06 : 183.84 = 122.80 : x - Step 2: Convert to fraction form
133.06/183.84 = 122.80/x - Step 3: Cross multiply
133.06x = 183.84 × 122.80 - Step 4: Simplify right side
133.06x = 22,574.98 - Step 5: Solve for x
x = 22,574.98/133.06 - Step 6: Final answer
x = 169.66
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.