Finding the Fourth Proportional to 479.14, 661.70 and 313.29
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Solution
The fourth proportional to 479.14, 661.70 and 313.29 is: 432.66
Step by Step Solution
- Step 1: Write the proportion equation
479.14 : 661.70 = 313.29 : x - Step 2: Convert to fraction form
479.14/661.70 = 313.29/x - Step 3: Cross multiply
479.14x = 661.70 × 313.29 - Step 4: Simplify right side
479.14x = 207,303.99 - Step 5: Solve for x
x = 207,303.99/479.14 - Step 6: Final answer
x = 432.66
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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.