Finding the Fourth Proportional to 406.47, 608.36 and 221.08
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Solution
The fourth proportional to 406.47, 608.36 and 221.08 is: 330.89
Step by Step Solution
- Step 1: Write the proportion equation
406.47 : 608.36 = 221.08 : x - Step 2: Convert to fraction form
406.47/608.36 = 221.08/x - Step 3: Cross multiply
406.47x = 608.36 × 221.08 - Step 4: Simplify right side
406.47x = 134,495.99 - Step 5: Solve for x
x = 134,495.99/406.47 - Step 6: Final answer
x = 330.89
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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.