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Finding the Fourth Proportional to 165.47, 228.03 and 123.92

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Solution

The fourth proportional to 165.47, 228.03 and 123.92 is: 170.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    165.47 : 228.03 = 123.92 : x
  2. Step 2: Convert to fraction form
    165.47/228.03 = 123.92/x
  3. Step 3: Cross multiply
    165.47x = 228.03 × 123.92
  4. Step 4: Simplify right side
    165.47x = 28,256.34
  5. Step 5: Solve for x
    x = 28,256.34/165.47
  6. Step 6: Final answer
    x = 170.77

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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.