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Finding the Fourth Proportional to 297.24, 445.18 and 215.24

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Solution

The fourth proportional to 297.24, 445.18 and 215.24 is: 322.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    297.24 : 445.18 = 215.24 : x
  2. Step 2: Convert to fraction form
    297.24/445.18 = 215.24/x
  3. Step 3: Cross multiply
    297.24x = 445.18 × 215.24
  4. Step 4: Simplify right side
    297.24x = 95,820.54
  5. Step 5: Solve for x
    x = 95,820.54/297.24
  6. Step 6: Final answer
    x = 322.37

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.