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Finding the Fourth Proportional to 335.70, 463.50 and 298.80

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Solution

The fourth proportional to 335.70, 463.50 and 298.80 is: 412.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    335.70 : 463.50 = 298.80 : x
  2. Step 2: Convert to fraction form
    335.70/463.50 = 298.80/x
  3. Step 3: Cross multiply
    335.70x = 463.50 × 298.80
  4. Step 4: Simplify right side
    335.70x = 138,493.80
  5. Step 5: Solve for x
    x = 138,493.80/335.70
  6. Step 6: Final answer
    x = 412.55

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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.