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Finding the Fourth Proportional to 297.88, 411.11 and 215.26

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Solution

The fourth proportional to 297.88, 411.11 and 215.26 is: 297.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    297.88 : 411.11 = 215.26 : x
  2. Step 2: Convert to fraction form
    297.88/411.11 = 215.26/x
  3. Step 3: Cross multiply
    297.88x = 411.11 × 215.26
  4. Step 4: Simplify right side
    297.88x = 88,495.54
  5. Step 5: Solve for x
    x = 88,495.54/297.88
  6. Step 6: Final answer
    x = 297.08

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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.