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Finding the Fourth Proportional to 444.69, 613.44 and 405.54

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Solution

The fourth proportional to 444.69, 613.44 and 405.54 is: 559.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    444.69 : 613.44 = 405.54 : x
  2. Step 2: Convert to fraction form
    444.69/613.44 = 405.54/x
  3. Step 3: Cross multiply
    444.69x = 613.44 × 405.54
  4. Step 4: Simplify right side
    444.69x = 248,774.46
  5. Step 5: Solve for x
    x = 248,774.46/444.69
  6. Step 6: Final answer
    x = 559.43

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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.