Finding the Fourth Proportional to 317.64, 437.91 and 242.99
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Solution
The fourth proportional to 317.64, 437.91 and 242.99 is: 335.00
Step by Step Solution
- Step 1: Write the proportion equation
317.64 : 437.91 = 242.99 : x - Step 2: Convert to fraction form
317.64/437.91 = 242.99/x - Step 3: Cross multiply
317.64x = 437.91 × 242.99 - Step 4: Simplify right side
317.64x = 106,408.55 - Step 5: Solve for x
x = 106,408.55/317.64 - Step 6: Final answer
x = 335.00
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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.