Finding the Fourth Proportional to 349.78, 482.70 and 202.42
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Solution
The fourth proportional to 349.78, 482.70 and 202.42 is: 279.34
Step by Step Solution
- Step 1: Write the proportion equation
349.78 : 482.70 = 202.42 : x - Step 2: Convert to fraction form
349.78/482.70 = 202.42/x - Step 3: Cross multiply
349.78x = 482.70 × 202.42 - Step 4: Simplify right side
349.78x = 97,708.13 - Step 5: Solve for x
x = 97,708.13/349.78 - Step 6: Final answer
x = 279.34
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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.