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Finding the Fourth Proportional to 265.40, 365.46 and 206.84

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Solution

The fourth proportional to 265.40, 365.46 and 206.84 is: 284.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    265.40 : 365.46 = 206.84 : x
  2. Step 2: Convert to fraction form
    265.40/365.46 = 206.84/x
  3. Step 3: Cross multiply
    265.40x = 365.46 × 206.84
  4. Step 4: Simplify right side
    265.40x = 75,591.75
  5. Step 5: Solve for x
    x = 75,591.75/265.40
  6. Step 6: Final answer
    x = 284.82

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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.