Finding the Fourth Proportional to 79.84, 119.08 and 74.44
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Solution
The fourth proportional to 79.84, 119.08 and 74.44 is: 111.03
Step by Step Solution
- Step 1: Write the proportion equation
79.84 : 119.08 = 74.44 : x - Step 2: Convert to fraction form
79.84/119.08 = 74.44/x - Step 3: Cross multiply
79.84x = 119.08 × 74.44 - Step 4: Simplify right side
79.84x = 8,864.32 - Step 5: Solve for x
x = 8,864.32/79.84 - Step 6: Final answer
x = 111.03
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Why These Related Problems?
These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.