Finding the Fourth Proportional to 261.74, 392.40 and 158.99
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Solution
The fourth proportional to 261.74, 392.40 and 158.99 is: 238.35
Step by Step Solution
- Step 1: Write the proportion equation
261.74 : 392.40 = 158.99 : x - Step 2: Convert to fraction form
261.74/392.40 = 158.99/x - Step 3: Cross multiply
261.74x = 392.40 × 158.99 - Step 4: Simplify right side
261.74x = 62,385.71 - Step 5: Solve for x
x = 62,385.71/261.74 - Step 6: Final answer
x = 238.35
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.