Finding the Fourth Proportional to 87.36, 130.97 and 41.70
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Solution
The fourth proportional to 87.36, 130.97 and 41.70 is: 62.51
Step by Step Solution
- Step 1: Write the proportion equation
87.36 : 130.97 = 41.70 : x - Step 2: Convert to fraction form
87.36/130.97 = 41.70/x - Step 3: Cross multiply
87.36x = 130.97 × 41.70 - Step 4: Simplify right side
87.36x = 5,461.24 - Step 5: Solve for x
x = 5,461.24/87.36 - Step 6: Final answer
x = 62.51
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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.