Finding the Fourth Proportional to 404.78, 558.50 and 230.09
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Solution
The fourth proportional to 404.78, 558.50 and 230.09 is: 317.46
Step by Step Solution
- Step 1: Write the proportion equation
404.78 : 558.50 = 230.09 : x - Step 2: Convert to fraction form
404.78/558.50 = 230.09/x - Step 3: Cross multiply
404.78x = 558.50 × 230.09 - Step 4: Simplify right side
404.78x = 128,501.32 - Step 5: Solve for x
x = 128,501.32/404.78 - Step 6: Final answer
x = 317.46
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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.