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Finding the Fourth Proportional to 202.94, 279.87 and 171.82

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Solution

The fourth proportional to 202.94, 279.87 and 171.82 is: 236.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    202.94 : 279.87 = 171.82 : x
  2. Step 2: Convert to fraction form
    202.94/279.87 = 171.82/x
  3. Step 3: Cross multiply
    202.94x = 279.87 × 171.82
  4. Step 4: Simplify right side
    202.94x = 48,088.26
  5. Step 5: Solve for x
    x = 48,088.26/202.94
  6. Step 6: Final answer
    x = 236.96

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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.