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Finding the Fourth Proportional to 215.21, 297.04 and 132.39

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Solution

The fourth proportional to 215.21, 297.04 and 132.39 is: 182.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    215.21 : 297.04 = 132.39 : x
  2. Step 2: Convert to fraction form
    215.21/297.04 = 132.39/x
  3. Step 3: Cross multiply
    215.21x = 297.04 × 132.39
  4. Step 4: Simplify right side
    215.21x = 39,325.13
  5. Step 5: Solve for x
    x = 39,325.13/215.21
  6. Step 6: Final answer
    x = 182.73

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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.