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Finding the Fourth Proportional to 273.12, 407.68 and 268.32

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Solution

The fourth proportional to 273.12, 407.68 and 268.32 is: 400.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    273.12 : 407.68 = 268.32 : x
  2. Step 2: Convert to fraction form
    273.12/407.68 = 268.32/x
  3. Step 3: Cross multiply
    273.12x = 407.68 × 268.32
  4. Step 4: Simplify right side
    273.12x = 109,388.70
  5. Step 5: Solve for x
    x = 109,388.70/273.12
  6. Step 6: Final answer
    x = 400.52

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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.