Finding the Fourth Proportional to 409.06, 608.70 and 407.70
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Solution
The fourth proportional to 409.06, 608.70 and 407.70 is: 606.68
Step by Step Solution
- Step 1: Write the proportion equation
409.06 : 608.70 = 407.70 : x - Step 2: Convert to fraction form
409.06/608.70 = 407.70/x - Step 3: Cross multiply
409.06x = 608.70 × 407.70 - Step 4: Simplify right side
409.06x = 248,166.99 - Step 5: Solve for x
x = 248,166.99/409.06 - Step 6: Final answer
x = 606.68
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Why These Related Problems?
These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.