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Finding the Fourth Proportional to 297.87, 410.94 and 231.45

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Solution

The fourth proportional to 297.87, 410.94 and 231.45 is: 319.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    297.87 : 410.94 = 231.45 : x
  2. Step 2: Convert to fraction form
    297.87/410.94 = 231.45/x
  3. Step 3: Cross multiply
    297.87x = 410.94 × 231.45
  4. Step 4: Simplify right side
    297.87x = 95,112.06
  5. Step 5: Solve for x
    x = 95,112.06/297.87
  6. Step 6: Final answer
    x = 319.31

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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.