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Finding the Fourth Proportional to 165.51, 228.42 and 126.63

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Solution

The fourth proportional to 165.51, 228.42 and 126.63 is: 174.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    165.51 : 228.42 = 126.63 : x
  2. Step 2: Convert to fraction form
    165.51/228.42 = 126.63/x
  3. Step 3: Cross multiply
    165.51x = 228.42 × 126.63
  4. Step 4: Simplify right side
    165.51x = 28,924.82
  5. Step 5: Solve for x
    x = 28,924.82/165.51
  6. Step 6: Final answer
    x = 174.76

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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.