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Finding the Fourth Proportional to 265.20, 365.88 and 165.57

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Solution

The fourth proportional to 265.20, 365.88 and 165.57 is: 228.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    265.20 : 365.88 = 165.57 : x
  2. Step 2: Convert to fraction form
    265.20/365.88 = 165.57/x
  3. Step 3: Cross multiply
    265.20x = 365.88 × 165.57
  4. Step 4: Simplify right side
    265.20x = 60,578.75
  5. Step 5: Solve for x
    x = 60,578.75/265.20
  6. Step 6: Final answer
    x = 228.43

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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.