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Finding the Fourth Proportional to 202.77, 279.35 and 167.60

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Solution

The fourth proportional to 202.77, 279.35 and 167.60 is: 230.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    202.77 : 279.35 = 167.60 : x
  2. Step 2: Convert to fraction form
    202.77/279.35 = 167.60/x
  3. Step 3: Cross multiply
    202.77x = 279.35 × 167.60
  4. Step 4: Simplify right side
    202.77x = 46,819.55
  5. Step 5: Solve for x
    x = 46,819.55/202.77
  6. Step 6: Final answer
    x = 230.90

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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.