Finding the Fourth Proportional to 118.23, 177.54 and 74.99
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Solution
The fourth proportional to 118.23, 177.54 and 74.99 is: 112.61
Step by Step Solution
- Step 1: Write the proportion equation
118.23 : 177.54 = 74.99 : x - Step 2: Convert to fraction form
118.23/177.54 = 74.99/x - Step 3: Cross multiply
118.23x = 177.54 × 74.99 - Step 4: Simplify right side
118.23x = 13,313.72 - Step 5: Solve for x
x = 13,313.72/118.23 - Step 6: Final answer
x = 112.61
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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.