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Finding the Fourth Proportional to 540.27, 743.74 and 484.99

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Solution

The fourth proportional to 540.27, 743.74 and 484.99 is: 667.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    540.27 : 743.74 = 484.99 : x
  2. Step 2: Convert to fraction form
    540.27/743.74 = 484.99/x
  3. Step 3: Cross multiply
    540.27x = 743.74 × 484.99
  4. Step 4: Simplify right side
    540.27x = 360,708.00
  5. Step 5: Solve for x
    x = 360,708.00/540.27
  6. Step 6: Final answer
    x = 667.64

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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.