Finding the Fourth Proportional to 622.93, 859.70 and 412.75
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Solution
The fourth proportional to 622.93, 859.70 and 412.75 is: 569.63
Step by Step Solution
- Step 1: Write the proportion equation
622.93 : 859.70 = 412.75 : x - Step 2: Convert to fraction form
622.93/859.70 = 412.75/x - Step 3: Cross multiply
622.93x = 859.70 × 412.75 - Step 4: Simplify right side
622.93x = 354,841.18 - Step 5: Solve for x
x = 354,841.18/622.93 - Step 6: Final answer
x = 569.63
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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.