Finding the Fourth Proportional to 62.86, 86.69 and 40.99
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Solution
The fourth proportional to 62.86, 86.69 and 40.99 is: 56.53
Step by Step Solution
- Step 1: Write the proportion equation
62.86 : 86.69 = 40.99 : x - Step 2: Convert to fraction form
62.86/86.69 = 40.99/x - Step 3: Cross multiply
62.86x = 86.69 × 40.99 - Step 4: Simplify right side
62.86x = 3,553.42 - Step 5: Solve for x
x = 3,553.42/62.86 - Step 6: Final answer
x = 56.53
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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.