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Finding the Fourth Proportional to 559.82, 839.43 and 208.28

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Solution

The fourth proportional to 559.82, 839.43 and 208.28 is: 312.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    559.82 : 839.43 = 208.28 : x
  2. Step 2: Convert to fraction form
    559.82/839.43 = 208.28/x
  3. Step 3: Cross multiply
    559.82x = 839.43 × 208.28
  4. Step 4: Simplify right side
    559.82x = 174,836.48
  5. Step 5: Solve for x
    x = 174,836.48/559.82
  6. Step 6: Final answer
    x = 312.31

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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.