Finding the Fourth Proportional to 75.37, 103.74 and 58.99
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Solution
The fourth proportional to 75.37, 103.74 and 58.99 is: 81.19
Step by Step Solution
- Step 1: Write the proportion equation
75.37 : 103.74 = 58.99 : x - Step 2: Convert to fraction form
75.37/103.74 = 58.99/x - Step 3: Cross multiply
75.37x = 103.74 × 58.99 - Step 4: Simplify right side
75.37x = 6,119.62 - Step 5: Solve for x
x = 6,119.62/75.37 - Step 6: Final answer
x = 81.19
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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.