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Finding the Fourth Proportional to 165.64, 228.49 and 107.32

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Solution

The fourth proportional to 165.64, 228.49 and 107.32 is: 148.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    165.64 : 228.49 = 107.32 : x
  2. Step 2: Convert to fraction form
    165.64/228.49 = 107.32/x
  3. Step 3: Cross multiply
    165.64x = 228.49 × 107.32
  4. Step 4: Simplify right side
    165.64x = 24,519.87
  5. Step 5: Solve for x
    x = 24,519.87/165.64
  6. Step 6: Final answer
    x = 148.04

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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.