Finding the Fourth Proportional to 346.99, 478.68 and 253.58
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Solution
The fourth proportional to 346.99, 478.68 and 253.58 is: 349.82
Step by Step Solution
- Step 1: Write the proportion equation
346.99 : 478.68 = 253.58 : x - Step 2: Convert to fraction form
346.99/478.68 = 253.58/x - Step 3: Cross multiply
346.99x = 478.68 × 253.58 - Step 4: Simplify right side
346.99x = 121,383.67 - Step 5: Solve for x
x = 121,383.67/346.99 - Step 6: Final answer
x = 349.82
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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.