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Finding the Fourth Proportional to 165.54, 228.56 and 115.86

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Solution

The fourth proportional to 165.54, 228.56 and 115.86 is: 159.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    165.54 : 228.56 = 115.86 : x
  2. Step 2: Convert to fraction form
    165.54/228.56 = 115.86/x
  3. Step 3: Cross multiply
    165.54x = 228.56 × 115.86
  4. Step 4: Simplify right side
    165.54x = 26,480.96
  5. Step 5: Solve for x
    x = 26,480.96/165.54
  6. Step 6: Final answer
    x = 159.97

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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.