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Finding the Fourth Proportional to 573.94, 861 and 208.68

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Solution

The fourth proportional to 573.94, 861 and 208.68 is: 313.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    573.94 : 861 = 208.68 : x
  2. Step 2: Convert to fraction form
    573.94/861 = 208.68/x
  3. Step 3: Cross multiply
    573.94x = 861 × 208.68
  4. Step 4: Simplify right side
    573.94x = 179,673.48
  5. Step 5: Solve for x
    x = 179,673.48/573.94
  6. Step 6: Final answer
    x = 313.05

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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.