Finding the Fourth Proportional to 215.19, 322.99 and 134.19
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Solution
The fourth proportional to 215.19, 322.99 and 134.19 is: 201.41
Step by Step Solution
- Step 1: Write the proportion equation
215.19 : 322.99 = 134.19 : x - Step 2: Convert to fraction form
215.19/322.99 = 134.19/x - Step 3: Cross multiply
215.19x = 322.99 × 134.19 - Step 4: Simplify right side
215.19x = 43,341.69 - Step 5: Solve for x
x = 43,341.69/215.19 - Step 6: Final answer
x = 201.41
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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.