Finding the Fourth Proportional to 75.15, 112.80 and 58.97
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Solution
The fourth proportional to 75.15, 112.80 and 58.97 is: 88.51
Step by Step Solution
- Step 1: Write the proportion equation
75.15 : 112.80 = 58.97 : x - Step 2: Convert to fraction form
75.15/112.80 = 58.97/x - Step 3: Cross multiply
75.15x = 112.80 × 58.97 - Step 4: Simplify right side
75.15x = 6,651.25 - Step 5: Solve for x
x = 6,651.25/75.15 - Step 6: Final answer
x = 88.51
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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.