Finding the Fourth Proportional to 216.72, 299.19 and 210.99
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Solution
The fourth proportional to 216.72, 299.19 and 210.99 is: 291.28
Step by Step Solution
- Step 1: Write the proportion equation
216.72 : 299.19 = 210.99 : x - Step 2: Convert to fraction form
216.72/299.19 = 210.99/x - Step 3: Cross multiply
216.72x = 299.19 × 210.99 - Step 4: Simplify right side
216.72x = 63,126.10 - Step 5: Solve for x
x = 63,126.10/216.72 - Step 6: Final answer
x = 291.28
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.