Finding the Fourth Proportional to 257.45, 355.52 and 159.23
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Solution
The fourth proportional to 257.45, 355.52 and 159.23 is: 219.89
Step by Step Solution
- Step 1: Write the proportion equation
257.45 : 355.52 = 159.23 : x - Step 2: Convert to fraction form
257.45/355.52 = 159.23/x - Step 3: Cross multiply
257.45x = 355.52 × 159.23 - Step 4: Simplify right side
257.45x = 56,610.74 - Step 5: Solve for x
x = 56,610.74/257.45 - Step 6: Final answer
x = 219.89
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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.