Finding the Fourth Proportional to 354.60, 489.44 and 330.28
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Solution
The fourth proportional to 354.60, 489.44 and 330.28 is: 455.87
Step by Step Solution
- Step 1: Write the proportion equation
354.60 : 489.44 = 330.28 : x - Step 2: Convert to fraction form
354.60/489.44 = 330.28/x - Step 3: Cross multiply
354.60x = 489.44 × 330.28 - Step 4: Simplify right side
354.60x = 161,652.24 - Step 5: Solve for x
x = 161,652.24/354.60 - Step 6: Final answer
x = 455.87
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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.