Finding the Fourth Proportional to 79.65, 119.97 and 73.08
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Solution
The fourth proportional to 79.65, 119.97 and 73.08 is: 110.07
Step by Step Solution
- Step 1: Write the proportion equation
79.65 : 119.97 = 73.08 : x - Step 2: Convert to fraction form
79.65/119.97 = 73.08/x - Step 3: Cross multiply
79.65x = 119.97 × 73.08 - Step 4: Simplify right side
79.65x = 8,767.41 - Step 5: Solve for x
x = 8,767.41/79.65 - Step 6: Final answer
x = 110.07
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Why These Related Problems?
These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.