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Finding the Fourth Proportional to 556.85, 768.48 and 335.99

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Solution

The fourth proportional to 556.85, 768.48 and 335.99 is: 463.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    556.85 : 768.48 = 335.99 : x
  2. Step 2: Convert to fraction form
    556.85/768.48 = 335.99/x
  3. Step 3: Cross multiply
    556.85x = 768.48 × 335.99
  4. Step 4: Simplify right side
    556.85x = 258,201.60
  5. Step 5: Solve for x
    x = 258,201.60/556.85
  6. Step 6: Final answer
    x = 463.68

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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.