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Finding the Fourth Proportional to 203.15, 279.91 and 169.84

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Solution

The fourth proportional to 203.15, 279.91 and 169.84 is: 234.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    203.15 : 279.91 = 169.84 : x
  2. Step 2: Convert to fraction form
    203.15/279.91 = 169.84/x
  3. Step 3: Cross multiply
    203.15x = 279.91 × 169.84
  4. Step 4: Simplify right side
    203.15x = 47,539.91
  5. Step 5: Solve for x
    x = 47,539.91/203.15
  6. Step 6: Final answer
    x = 234.01

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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.