Finding the Fourth Proportional to 420.99, 577.17 and 414.60
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Solution
The fourth proportional to 420.99, 577.17 and 414.60 is: 568.41
Step by Step Solution
- Step 1: Write the proportion equation
420.99 : 577.17 = 414.60 : x - Step 2: Convert to fraction form
420.99/577.17 = 414.60/x - Step 3: Cross multiply
420.99x = 577.17 × 414.60 - Step 4: Simplify right side
420.99x = 239,294.68 - Step 5: Solve for x
x = 239,294.68/420.99 - Step 6: Final answer
x = 568.41
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Why These Related Problems?
These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.