Finding the Fourth Proportional to 523.59, 720.99 and 445.02
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Solution
The fourth proportional to 523.59, 720.99 and 445.02 is: 612.80
Step by Step Solution
- Step 1: Write the proportion equation
523.59 : 720.99 = 445.02 : x - Step 2: Convert to fraction form
523.59/720.99 = 445.02/x - Step 3: Cross multiply
523.59x = 720.99 × 445.02 - Step 4: Simplify right side
523.59x = 320,854.97 - Step 5: Solve for x
x = 320,854.97/523.59 - Step 6: Final answer
x = 612.80
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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.