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Finding the Fourth Proportional to 297.10, 409.08 and 255.58

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Solution

The fourth proportional to 297.10, 409.08 and 255.58 is: 351.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    297.10 : 409.08 = 255.58 : x
  2. Step 2: Convert to fraction form
    297.10/409.08 = 255.58/x
  3. Step 3: Cross multiply
    297.10x = 409.08 × 255.58
  4. Step 4: Simplify right side
    297.10x = 104,552.67
  5. Step 5: Solve for x
    x = 104,552.67/297.10
  6. Step 6: Final answer
    x = 351.91

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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.