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Finding the Fourth Proportional to 573.37, 860.40 and 208.19

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Solution

The fourth proportional to 573.37, 860.40 and 208.19 is: 312.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    573.37 : 860.40 = 208.19 : x
  2. Step 2: Convert to fraction form
    573.37/860.40 = 208.19/x
  3. Step 3: Cross multiply
    573.37x = 860.40 × 208.19
  4. Step 4: Simplify right side
    573.37x = 179,121.33
  5. Step 5: Solve for x
    x = 179,121.33/573.37
  6. Step 6: Final answer
    x = 312.40

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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.