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Finding the Fourth Proportional to 450.28, 621.20 and 273.16

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Solution

The fourth proportional to 450.28, 621.20 and 273.16 is: 376.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    450.28 : 621.20 = 273.16 : x
  2. Step 2: Convert to fraction form
    450.28/621.20 = 273.16/x
  3. Step 3: Cross multiply
    450.28x = 621.20 × 273.16
  4. Step 4: Simplify right side
    450.28x = 169,682.52
  5. Step 5: Solve for x
    x = 169,682.52/450.28
  6. Step 6: Final answer
    x = 376.84

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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.