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Finding the Fourth Proportional to 265.06, 365.79 and 186.40

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Solution

The fourth proportional to 265.06, 365.79 and 186.40 is: 257.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    265.06 : 365.79 = 186.40 : x
  2. Step 2: Convert to fraction form
    265.06/365.79 = 186.40/x
  3. Step 3: Cross multiply
    265.06x = 365.79 × 186.40
  4. Step 4: Simplify right side
    265.06x = 68,183.26
  5. Step 5: Solve for x
    x = 68,183.26/265.06
  6. Step 6: Final answer
    x = 257.24

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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.