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Finding the Fourth Proportional to 335.68, 463.40 and 231.32

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Solution

The fourth proportional to 335.68, 463.40 and 231.32 is: 319.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    335.68 : 463.40 = 231.32 : x
  2. Step 2: Convert to fraction form
    335.68/463.40 = 231.32/x
  3. Step 3: Cross multiply
    335.68x = 463.40 × 231.32
  4. Step 4: Simplify right side
    335.68x = 107,193.69
  5. Step 5: Solve for x
    x = 107,193.69/335.68
  6. Step 6: Final answer
    x = 319.33

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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.