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Finding the Fourth Proportional to 335.28, 463.65 and 320.79

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Solution

The fourth proportional to 335.28, 463.65 and 320.79 is: 443.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    335.28 : 463.65 = 320.79 : x
  2. Step 2: Convert to fraction form
    335.28/463.65 = 320.79/x
  3. Step 3: Cross multiply
    335.28x = 463.65 × 320.79
  4. Step 4: Simplify right side
    335.28x = 148,734.28
  5. Step 5: Solve for x
    x = 148,734.28/335.28
  6. Step 6: Final answer
    x = 443.61

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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.