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Finding the Fourth Proportional to 573.82, 860.70 and 208.60

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Solution

The fourth proportional to 573.82, 860.70 and 208.60 is: 312.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    573.82 : 860.70 = 208.60 : x
  2. Step 2: Convert to fraction form
    573.82/860.70 = 208.60/x
  3. Step 3: Cross multiply
    573.82x = 860.70 × 208.60
  4. Step 4: Simplify right side
    573.82x = 179,542.02
  5. Step 5: Solve for x
    x = 179,542.02/573.82
  6. Step 6: Final answer
    x = 312.89

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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.