Finding the Fourth Proportional to 79.70, 110.07 and 59.09
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Solution
The fourth proportional to 79.70, 110.07 and 59.09 is: 81.60
Step by Step Solution
- Step 1: Write the proportion equation
79.70 : 110.07 = 59.09 : x - Step 2: Convert to fraction form
79.70/110.07 = 59.09/x - Step 3: Cross multiply
79.70x = 110.07 × 59.09 - Step 4: Simplify right side
79.70x = 6,503.49 - Step 5: Solve for x
x = 6,503.49/79.70 - Step 6: Final answer
x = 81.60
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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.