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Finding the Fourth Proportional to 556.44, 768.20 and 335.44

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Solution

The fourth proportional to 556.44, 768.20 and 335.44 is: 463.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    556.44 : 768.20 = 335.44 : x
  2. Step 2: Convert to fraction form
    556.44/768.20 = 335.44/x
  3. Step 3: Cross multiply
    556.44x = 768.20 × 335.44
  4. Step 4: Simplify right side
    556.44x = 257,685.01
  5. Step 5: Solve for x
    x = 257,685.01/556.44
  6. Step 6: Final answer
    x = 463.10

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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.