Finding the Fourth Proportional to 171.68, 257.61 and 132.99
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Solution
The fourth proportional to 171.68, 257.61 and 132.99 is: 199.56
Step by Step Solution
- Step 1: Write the proportion equation
171.68 : 257.61 = 132.99 : x - Step 2: Convert to fraction form
171.68/257.61 = 132.99/x - Step 3: Cross multiply
171.68x = 257.61 × 132.99 - Step 4: Simplify right side
171.68x = 34,259.55 - Step 5: Solve for x
x = 34,259.55/171.68 - Step 6: Final answer
x = 199.56
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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.