Finding the Fourth Proportional to 253.80, 349.99 and 207.09
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Solution
The fourth proportional to 253.80, 349.99 and 207.09 is: 285.57
Step by Step Solution
- Step 1: Write the proportion equation
253.80 : 349.99 = 207.09 : x - Step 2: Convert to fraction form
253.80/349.99 = 207.09/x - Step 3: Cross multiply
253.80x = 349.99 × 207.09 - Step 4: Simplify right side
253.80x = 72,478.91 - Step 5: Solve for x
x = 72,478.91/253.80 - Step 6: Final answer
x = 285.57
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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.