Finding the Fourth Proportional to 171.73, 257.63 and 49.99
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Solution
The fourth proportional to 171.73, 257.63 and 49.99 is: 74.99
Step by Step Solution
- Step 1: Write the proportion equation
171.73 : 257.63 = 49.99 : x - Step 2: Convert to fraction form
171.73/257.63 = 49.99/x - Step 3: Cross multiply
171.73x = 257.63 × 49.99 - Step 4: Simplify right side
171.73x = 12,878.40 - Step 5: Solve for x
x = 12,878.40/171.73 - 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.