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Finding the Fourth Proportional to 165.50, 228.50 and 107.38

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Solution

The fourth proportional to 165.50, 228.50 and 107.38 is: 148.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    165.50 : 228.50 = 107.38 : x
  2. Step 2: Convert to fraction form
    165.50/228.50 = 107.38/x
  3. Step 3: Cross multiply
    165.50x = 228.50 × 107.38
  4. Step 4: Simplify right side
    165.50x = 24,536.33
  5. Step 5: Solve for x
    x = 24,536.33/165.50
  6. Step 6: Final answer
    x = 148.26

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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.