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Finding the Fourth Proportional to 444.69, 613.59 and 287.34

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Solution

The fourth proportional to 444.69, 613.59 and 287.34 is: 396.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    444.69 : 613.59 = 287.34 : x
  2. Step 2: Convert to fraction form
    444.69/613.59 = 287.34/x
  3. Step 3: Cross multiply
    444.69x = 613.59 × 287.34
  4. Step 4: Simplify right side
    444.69x = 176,308.95
  5. Step 5: Solve for x
    x = 176,308.95/444.69
  6. Step 6: Final answer
    x = 396.48

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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.