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Finding the Fourth Proportional to 322.64, 445.20 and 182.76

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Solution

The fourth proportional to 322.64, 445.20 and 182.76 is: 252.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    322.64 : 445.20 = 182.76 : x
  2. Step 2: Convert to fraction form
    322.64/445.20 = 182.76/x
  3. Step 3: Cross multiply
    322.64x = 445.20 × 182.76
  4. Step 4: Simplify right side
    322.64x = 81,364.75
  5. Step 5: Solve for x
    x = 81,364.75/322.64
  6. Step 6: Final answer
    x = 252.18

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Find fourth proportional to 161.32, 222.60 and 91.38
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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.