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Finding the Fourth Proportional to 215.72, 297.85 and 169.01

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Solution

The fourth proportional to 215.72, 297.85 and 169.01 is: 233.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    215.72 : 297.85 = 169.01 : x
  2. Step 2: Convert to fraction form
    215.72/297.85 = 169.01/x
  3. Step 3: Cross multiply
    215.72x = 297.85 × 169.01
  4. Step 4: Simplify right side
    215.72x = 50,338.03
  5. Step 5: Solve for x
    x = 50,338.03/215.72
  6. Step 6: Final answer
    x = 233.35

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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.