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Finding the Fourth Proportional to 556.55, 768.20 and 335.46

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Solution

The fourth proportional to 556.55, 768.20 and 335.46 is: 463.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    556.55 : 768.20 = 335.46 : x
  2. Step 2: Convert to fraction form
    556.55/768.20 = 335.46/x
  3. Step 3: Cross multiply
    556.55x = 768.20 × 335.46
  4. Step 4: Simplify right side
    556.55x = 257,700.37
  5. Step 5: Solve for x
    x = 257,700.37/556.55
  6. Step 6: Final answer
    x = 463.03

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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.