Finding the Fourth Proportional to 424.55, 636.86 and 135.99
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Solution
The fourth proportional to 424.55, 636.86 and 135.99 is: 204.00
Step by Step Solution
- Step 1: Write the proportion equation
424.55 : 636.86 = 135.99 : x - Step 2: Convert to fraction form
424.55/636.86 = 135.99/x - Step 3: Cross multiply
424.55x = 636.86 × 135.99 - Step 4: Simplify right side
424.55x = 86,606.93 - Step 5: Solve for x
x = 86,606.93/424.55 - Step 6: Final answer
x = 204.00
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.