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Finding the Fourth Proportional to 165.79, 228.89 and 119.28

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Solution

The fourth proportional to 165.79, 228.89 and 119.28 is: 164.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    165.79 : 228.89 = 119.28 : x
  2. Step 2: Convert to fraction form
    165.79/228.89 = 119.28/x
  3. Step 3: Cross multiply
    165.79x = 228.89 × 119.28
  4. Step 4: Simplify right side
    165.79x = 27,301.40
  5. Step 5: Solve for x
    x = 27,301.40/165.79
  6. Step 6: Final answer
    x = 164.68

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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.