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Finding the Fourth Proportional to 404.45, 558.14 and 264.80

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Solution

The fourth proportional to 404.45, 558.14 and 264.80 is: 365.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    404.45 : 558.14 = 264.80 : x
  2. Step 2: Convert to fraction form
    404.45/558.14 = 264.80/x
  3. Step 3: Cross multiply
    404.45x = 558.14 × 264.80
  4. Step 4: Simplify right side
    404.45x = 147,796.54
  5. Step 5: Solve for x
    x = 147,796.54/404.45
  6. Step 6: Final answer
    x = 365.42

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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.