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Finding the Fourth Proportional to 556.81, 768.43 and 335.79

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Solution

The fourth proportional to 556.81, 768.43 and 335.79 is: 463.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    556.81 : 768.43 = 335.79 : x
  2. Step 2: Convert to fraction form
    556.81/768.43 = 335.79/x
  3. Step 3: Cross multiply
    556.81x = 768.43 × 335.79
  4. Step 4: Simplify right side
    556.81x = 258,032.19
  5. Step 5: Solve for x
    x = 258,032.19/556.81
  6. Step 6: Final answer
    x = 463.41

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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.