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Finding the Fourth Proportional to 273.39, 407.11 and 270.36

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Solution

The fourth proportional to 273.39, 407.11 and 270.36 is: 402.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    273.39 : 407.11 = 270.36 : x
  2. Step 2: Convert to fraction form
    273.39/407.11 = 270.36/x
  3. Step 3: Cross multiply
    273.39x = 407.11 × 270.36
  4. Step 4: Simplify right side
    273.39x = 110,065.58
  5. Step 5: Solve for x
    x = 110,065.58/273.39
  6. Step 6: Final answer
    x = 402.60

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.