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Finding the Fourth Proportional to 539.04, 808.67 and 279.17

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Solution

The fourth proportional to 539.04, 808.67 and 279.17 is: 418.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    539.04 : 808.67 = 279.17 : x
  2. Step 2: Convert to fraction form
    539.04/808.67 = 279.17/x
  3. Step 3: Cross multiply
    539.04x = 808.67 × 279.17
  4. Step 4: Simplify right side
    539.04x = 225,756.40
  5. Step 5: Solve for x
    x = 225,756.40/539.04
  6. Step 6: Final answer
    x = 418.81

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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.