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Finding the Fourth Proportional to 540.28, 744.87 and 451.81

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Solution

The fourth proportional to 540.28, 744.87 and 451.81 is: 622.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    540.28 : 744.87 = 451.81 : x
  2. Step 2: Convert to fraction form
    540.28/744.87 = 451.81/x
  3. Step 3: Cross multiply
    540.28x = 744.87 × 451.81
  4. Step 4: Simplify right side
    540.28x = 336,539.71
  5. Step 5: Solve for x
    x = 336,539.71/540.28
  6. Step 6: Final answer
    x = 622.90

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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.