Finding the Fourth Proportional to 74.35, 110.71 and 73.26
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Solution
The fourth proportional to 74.35, 110.71 and 73.26 is: 109.09
Step by Step Solution
- Step 1: Write the proportion equation
74.35 : 110.71 = 73.26 : x - Step 2: Convert to fraction form
74.35/110.71 = 73.26/x - Step 3: Cross multiply
74.35x = 110.71 × 73.26 - Step 4: Simplify right side
74.35x = 8,110.71 - Step 5: Solve for x
x = 8,110.71/74.35 - Step 6: Final answer
x = 109.09
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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.