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Finding the Fourth Proportional to 265.11, 365.73 and 154.55

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Solution

The fourth proportional to 265.11, 365.73 and 154.55 is: 213.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    265.11 : 365.73 = 154.55 : x
  2. Step 2: Convert to fraction form
    265.11/365.73 = 154.55/x
  3. Step 3: Cross multiply
    265.11x = 365.73 × 154.55
  4. Step 4: Simplify right side
    265.11x = 56,523.57
  5. Step 5: Solve for x
    x = 56,523.57/265.11
  6. Step 6: Final answer
    x = 213.21

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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.