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Finding the Fourth Proportional to 202.60, 279.71 and 119.71

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Solution

The fourth proportional to 202.60, 279.71 and 119.71 is: 165.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    202.60 : 279.71 = 119.71 : x
  2. Step 2: Convert to fraction form
    202.60/279.71 = 119.71/x
  3. Step 3: Cross multiply
    202.60x = 279.71 × 119.71
  4. Step 4: Simplify right side
    202.60x = 33,484.08
  5. Step 5: Solve for x
    x = 33,484.08/202.60
  6. Step 6: Final answer
    x = 165.27

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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.