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Finding the Fourth Proportional to 539.51, 809.40 and 174.33

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Solution

The fourth proportional to 539.51, 809.40 and 174.33 is: 261.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    539.51 : 809.40 = 174.33 : x
  2. Step 2: Convert to fraction form
    539.51/809.40 = 174.33/x
  3. Step 3: Cross multiply
    539.51x = 809.40 × 174.33
  4. Step 4: Simplify right side
    539.51x = 141,102.70
  5. Step 5: Solve for x
    x = 141,102.70/539.51
  6. Step 6: Final answer
    x = 261.54

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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.