Finding the Fourth Proportional to 469.52, 647.79 and 272.99
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Solution
The fourth proportional to 469.52, 647.79 and 272.99 is: 376.64
Step by Step Solution
- Step 1: Write the proportion equation
469.52 : 647.79 = 272.99 : x - Step 2: Convert to fraction form
469.52/647.79 = 272.99/x - Step 3: Cross multiply
469.52x = 647.79 × 272.99 - Step 4: Simplify right side
469.52x = 176,840.19 - Step 5: Solve for x
x = 176,840.19/469.52 - Step 6: Final answer
x = 376.64
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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.