Finding the Fourth Proportional to 88.65, 132.90 and 42.99
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Solution
The fourth proportional to 88.65, 132.90 and 42.99 is: 64.45
Step by Step Solution
- Step 1: Write the proportion equation
88.65 : 132.90 = 42.99 : x - Step 2: Convert to fraction form
88.65/132.90 = 42.99/x - Step 3: Cross multiply
88.65x = 132.90 × 42.99 - Step 4: Simplify right side
88.65x = 5,713.37 - Step 5: Solve for x
x = 5,713.37/88.65 - Step 6: Final answer
x = 64.45
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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.