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Finding the Fourth Proportional to 539.48, 809.35 and 192.84

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Solution

The fourth proportional to 539.48, 809.35 and 192.84 is: 289.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    539.48 : 809.35 = 192.84 : x
  2. Step 2: Convert to fraction form
    539.48/809.35 = 192.84/x
  3. Step 3: Cross multiply
    539.48x = 809.35 × 192.84
  4. Step 4: Simplify right side
    539.48x = 156,071.54
  5. Step 5: Solve for x
    x = 156,071.54/539.48
  6. Step 6: Final answer
    x = 289.30

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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.