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Finding the Fourth Proportional to 265.10, 365.75 and 154.61

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Solution

The fourth proportional to 265.10, 365.75 and 154.61 is: 213.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    265.10 : 365.75 = 154.61 : x
  2. Step 2: Convert to fraction form
    265.10/365.75 = 154.61/x
  3. Step 3: Cross multiply
    265.10x = 365.75 × 154.61
  4. Step 4: Simplify right side
    265.10x = 56,546.01
  5. Step 5: Solve for x
    x = 56,546.01/265.10
  6. Step 6: Final answer
    x = 213.30

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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.