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Finding the Fourth Proportional to 540.20, 810.32 and 193.56

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Solution

The fourth proportional to 540.20, 810.32 and 193.56 is: 290.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    540.20 : 810.32 = 193.56 : x
  2. Step 2: Convert to fraction form
    540.20/810.32 = 193.56/x
  3. Step 3: Cross multiply
    540.20x = 810.32 × 193.56
  4. Step 4: Simplify right side
    540.20x = 156,840.52
  5. Step 5: Solve for x
    x = 156,840.52/540.20
  6. Step 6: Final answer
    x = 290.34

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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.