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Finding the Fourth Proportional to 540.05, 810.27 and 215.64

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Solution

The fourth proportional to 540.05, 810.27 and 215.64 is: 323.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    540.05 : 810.27 = 215.64 : x
  2. Step 2: Convert to fraction form
    540.05/810.27 = 215.64/x
  3. Step 3: Cross multiply
    540.05x = 810.27 × 215.64
  4. Step 4: Simplify right side
    540.05x = 174,726.62
  5. Step 5: Solve for x
    x = 174,726.62/540.05
  6. Step 6: Final answer
    x = 323.54

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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.