Finding the Fourth Proportional to 118.48, 177.72 and 49.99
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Solution
The fourth proportional to 118.48, 177.72 and 49.99 is: 74.99
Step by Step Solution
- Step 1: Write the proportion equation
118.48 : 177.72 = 49.99 : x - Step 2: Convert to fraction form
118.48/177.72 = 49.99/x - Step 3: Cross multiply
118.48x = 177.72 × 49.99 - Step 4: Simplify right side
118.48x = 8,884.22 - Step 5: Solve for x
x = 8,884.22/118.48 - Step 6: Final answer
x = 74.99
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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.