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Finding the Fourth Proportional to 557.01, 768.79 and 335.91

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Solution

The fourth proportional to 557.01, 768.79 and 335.91 is: 463.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    557.01 : 768.79 = 335.91 : x
  2. Step 2: Convert to fraction form
    557.01/768.79 = 335.91/x
  3. Step 3: Cross multiply
    557.01x = 768.79 × 335.91
  4. Step 4: Simplify right side
    557.01x = 258,247.55
  5. Step 5: Solve for x
    x = 258,247.55/557.01
  6. Step 6: Final answer
    x = 463.63

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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.