Finding the Fourth Proportional to 354.21, 489.10 and 230.08
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Solution
The fourth proportional to 354.21, 489.10 and 230.08 is: 317.70
Step by Step Solution
- Step 1: Write the proportion equation
354.21 : 489.10 = 230.08 : x - Step 2: Convert to fraction form
354.21/489.10 = 230.08/x - Step 3: Cross multiply
354.21x = 489.10 × 230.08 - Step 4: Simplify right side
354.21x = 112,532.13 - Step 5: Solve for x
x = 112,532.13/354.21 - Step 6: Final answer
x = 317.70
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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.