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Finding the Fourth Proportional to 344.84, 475.49 and 257.36

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Solution

The fourth proportional to 344.84, 475.49 and 257.36 is: 354.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    344.84 : 475.49 = 257.36 : x
  2. Step 2: Convert to fraction form
    344.84/475.49 = 257.36/x
  3. Step 3: Cross multiply
    344.84x = 475.49 × 257.36
  4. Step 4: Simplify right side
    344.84x = 122,370.82
  5. Step 5: Solve for x
    x = 122,370.82/344.84
  6. Step 6: Final answer
    x = 354.86

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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.