Finding the Fourth Proportional to 88.09, 131.55 and 83.65
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Solution
The fourth proportional to 88.09, 131.55 and 83.65 is: 124.92
Step by Step Solution
- Step 1: Write the proportion equation
88.09 : 131.55 = 83.65 : x - Step 2: Convert to fraction form
88.09/131.55 = 83.65/x - Step 3: Cross multiply
88.09x = 131.55 × 83.65 - Step 4: Simplify right side
88.09x = 11,004.23 - Step 5: Solve for x
x = 11,004.23/88.09 - Step 6: Final answer
x = 124.92
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Why These Related Problems?
These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.