Finding the Fourth Proportional to 313.11, 469.21 and 221.99
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Solution
The fourth proportional to 313.11, 469.21 and 221.99 is: 332.65
Step by Step Solution
- Step 1: Write the proportion equation
313.11 : 469.21 = 221.99 : x - Step 2: Convert to fraction form
313.11/469.21 = 221.99/x - Step 3: Cross multiply
313.11x = 469.21 × 221.99 - Step 4: Simplify right side
313.11x = 104,157.58 - Step 5: Solve for x
x = 104,157.58/313.11 - Step 6: Final answer
x = 332.65
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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.