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Finding the Fourth Proportional to 540.11, 810.62 and 280.27

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Solution

The fourth proportional to 540.11, 810.62 and 280.27 is: 420.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    540.11 : 810.62 = 280.27 : x
  2. Step 2: Convert to fraction form
    540.11/810.62 = 280.27/x
  3. Step 3: Cross multiply
    540.11x = 810.62 × 280.27
  4. Step 4: Simplify right side
    540.11x = 227,192.14
  5. Step 5: Solve for x
    x = 227,192.14/540.11
  6. Step 6: Final answer
    x = 420.64

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.