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Finding the Fourth Proportional to 444.85, 613.91 and 258.39

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Solution

The fourth proportional to 444.85, 613.91 and 258.39 is: 356.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    444.85 : 613.91 = 258.39 : x
  2. Step 2: Convert to fraction form
    444.85/613.91 = 258.39/x
  3. Step 3: Cross multiply
    444.85x = 613.91 × 258.39
  4. Step 4: Simplify right side
    444.85x = 158,628.85
  5. Step 5: Solve for x
    x = 158,628.85/444.85
  6. Step 6: Final answer
    x = 356.59

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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.