Finding the Fourth Proportional to 349.68, 524.08 and 257.68
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Solution
The fourth proportional to 349.68, 524.08 and 257.68 is: 386.20
Step by Step Solution
- Step 1: Write the proportion equation
349.68 : 524.08 = 257.68 : x - Step 2: Convert to fraction form
349.68/524.08 = 257.68/x - Step 3: Cross multiply
349.68x = 524.08 × 257.68 - Step 4: Simplify right side
349.68x = 135,044.93 - Step 5: Solve for x
x = 135,044.93/349.68 - Step 6: Final answer
x = 386.20
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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.