Finding the Fourth Proportional to 74.73, 112.08 and 52.99
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Solution
The fourth proportional to 74.73, 112.08 and 52.99 is: 79.47
Step by Step Solution
- Step 1: Write the proportion equation
74.73 : 112.08 = 52.99 : x - Step 2: Convert to fraction form
74.73/112.08 = 52.99/x - Step 3: Cross multiply
74.73x = 112.08 × 52.99 - Step 4: Simplify right side
74.73x = 5,939.12 - Step 5: Solve for x
x = 5,939.12/74.73 - Step 6: Final answer
x = 79.47
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.