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Finding the Fourth Proportional to 558.36, 768.24 and 544.69

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Solution

The fourth proportional to 558.36, 768.24 and 544.69 is: 749.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    558.36 : 768.24 = 544.69 : x
  2. Step 2: Convert to fraction form
    558.36/768.24 = 544.69/x
  3. Step 3: Cross multiply
    558.36x = 768.24 × 544.69
  4. Step 4: Simplify right side
    558.36x = 418,452.65
  5. Step 5: Solve for x
    x = 418,452.65/558.36
  6. Step 6: Final answer
    x = 749.43

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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.