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Finding the Fourth Proportional to 335.20, 462.52 and 187.81

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Solution

The fourth proportional to 335.20, 462.52 and 187.81 is: 259.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    335.20 : 462.52 = 187.81 : x
  2. Step 2: Convert to fraction form
    335.20/462.52 = 187.81/x
  3. Step 3: Cross multiply
    335.20x = 462.52 × 187.81
  4. Step 4: Simplify right side
    335.20x = 86,865.88
  5. Step 5: Solve for x
    x = 86,865.88/335.20
  6. Step 6: Final answer
    x = 259.15

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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.