Finding the Fourth Proportional to 127.79, 176.34 and 69.56
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Solution
The fourth proportional to 127.79, 176.34 and 69.56 is: 95.99
Step by Step Solution
- Step 1: Write the proportion equation
127.79 : 176.34 = 69.56 : x - Step 2: Convert to fraction form
127.79/176.34 = 69.56/x - Step 3: Cross multiply
127.79x = 176.34 × 69.56 - Step 4: Simplify right side
127.79x = 12,266.65 - Step 5: Solve for x
x = 12,266.65/127.79 - Step 6: Final answer
x = 95.99
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.