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Finding the Fourth Proportional to 335.79, 462.78 and 252.70

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Solution

The fourth proportional to 335.79, 462.78 and 252.70 is: 348.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    335.79 : 462.78 = 252.70 : x
  2. Step 2: Convert to fraction form
    335.79/462.78 = 252.70/x
  3. Step 3: Cross multiply
    335.79x = 462.78 × 252.70
  4. Step 4: Simplify right side
    335.79x = 116,943.35
  5. Step 5: Solve for x
    x = 116,943.35/335.79
  6. Step 6: Final answer
    x = 348.26

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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.