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Finding the Fourth Proportional to 215.28, 297.33 and 141.93

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Solution

The fourth proportional to 215.28, 297.33 and 141.93 is: 196.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    215.28 : 297.33 = 141.93 : x
  2. Step 2: Convert to fraction form
    215.28/297.33 = 141.93/x
  3. Step 3: Cross multiply
    215.28x = 297.33 × 141.93
  4. Step 4: Simplify right side
    215.28x = 42,200.05
  5. Step 5: Solve for x
    x = 42,200.05/215.28
  6. Step 6: Final answer
    x = 196.02

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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.