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Finding the Fourth Proportional to 573.65, 859.95 and 208.36

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Solution

The fourth proportional to 573.65, 859.95 and 208.36 is: 312.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    573.65 : 859.95 = 208.36 : x
  2. Step 2: Convert to fraction form
    573.65/859.95 = 208.36/x
  3. Step 3: Cross multiply
    573.65x = 859.95 × 208.36
  4. Step 4: Simplify right side
    573.65x = 179,173.84
  5. Step 5: Solve for x
    x = 179,173.84/573.65
  6. Step 6: Final answer
    x = 312.34

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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.