Finding the Fourth Proportional to 75.19, 112.87 and 58.08
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Solution
The fourth proportional to 75.19, 112.87 and 58.08 is: 87.18
Step by Step Solution
- Step 1: Write the proportion equation
75.19 : 112.87 = 58.08 : x - Step 2: Convert to fraction form
75.19/112.87 = 58.08/x - Step 3: Cross multiply
75.19x = 112.87 × 58.08 - Step 4: Simplify right side
75.19x = 6,554.93 - Step 5: Solve for x
x = 6,554.93/75.19 - Step 6: Final answer
x = 87.18
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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.