Finding the Fourth Proportional to 349.48, 482.21 and 202.06
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Solution
The fourth proportional to 349.48, 482.21 and 202.06 is: 278.80
Step by Step Solution
- Step 1: Write the proportion equation
349.48 : 482.21 = 202.06 : x - Step 2: Convert to fraction form
349.48/482.21 = 202.06/x - Step 3: Cross multiply
349.48x = 482.21 × 202.06 - Step 4: Simplify right side
349.48x = 97,431.93 - Step 5: Solve for x
x = 97,431.93/349.48 - Step 6: Final answer
x = 278.80
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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.