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Finding the Fourth Proportional to 335.69, 462.80 and 288.84

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Solution

The fourth proportional to 335.69, 462.80 and 288.84 is: 398.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    335.69 : 462.80 = 288.84 : x
  2. Step 2: Convert to fraction form
    335.69/462.80 = 288.84/x
  3. Step 3: Cross multiply
    335.69x = 462.80 × 288.84
  4. Step 4: Simplify right side
    335.69x = 133,675.87
  5. Step 5: Solve for x
    x = 133,675.87/335.69
  6. Step 6: Final answer
    x = 398.22

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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.