Finding the Fourth Proportional to 119.18, 177.80 and 115.08
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Solution
The fourth proportional to 119.18, 177.80 and 115.08 is: 171.68
Step by Step Solution
- Step 1: Write the proportion equation
119.18 : 177.80 = 115.08 : x - Step 2: Convert to fraction form
119.18/177.80 = 115.08/x - Step 3: Cross multiply
119.18x = 177.80 × 115.08 - Step 4: Simplify right side
119.18x = 20,461.51 - Step 5: Solve for x
x = 20,461.51/119.18 - Step 6: Final answer
x = 171.68
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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.