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Finding the Fourth Proportional to 444.39, 613.25 and 257.90

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Solution

The fourth proportional to 444.39, 613.25 and 257.90 is: 355.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    444.39 : 613.25 = 257.90 : x
  2. Step 2: Convert to fraction form
    444.39/613.25 = 257.90/x
  3. Step 3: Cross multiply
    444.39x = 613.25 × 257.90
  4. Step 4: Simplify right side
    444.39x = 158,152.82
  5. Step 5: Solve for x
    x = 158,152.82/444.39
  6. Step 6: Final answer
    x = 355.89

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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.