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Finding the Fourth Proportional to 444.51, 613.34 and 257.94

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Solution

The fourth proportional to 444.51, 613.34 and 257.94 is: 355.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    444.51 : 613.34 = 257.94 : x
  2. Step 2: Convert to fraction form
    444.51/613.34 = 257.94/x
  3. Step 3: Cross multiply
    444.51x = 613.34 × 257.94
  4. Step 4: Simplify right side
    444.51x = 158,203.63
  5. Step 5: Solve for x
    x = 158,203.63/444.51
  6. Step 6: Final answer
    x = 355.91

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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.