Finding the Fourth Proportional to 257.28, 354.99 and 146.70
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Solution
The fourth proportional to 257.28, 354.99 and 146.70 is: 202.41
Step by Step Solution
- Step 1: Write the proportion equation
257.28 : 354.99 = 146.70 : x - Step 2: Convert to fraction form
257.28/354.99 = 146.70/x - Step 3: Cross multiply
257.28x = 354.99 × 146.70 - Step 4: Simplify right side
257.28x = 52,076.36 - Step 5: Solve for x
x = 52,076.36/257.28 - Step 6: Final answer
x = 202.41
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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.