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Finding the Fourth Proportional to 573.28, 859.72 and 309.68

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Solution

The fourth proportional to 573.28, 859.72 and 309.68 is: 464.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    573.28 : 859.72 = 309.68 : x
  2. Step 2: Convert to fraction form
    573.28/859.72 = 309.68/x
  3. Step 3: Cross multiply
    573.28x = 859.72 × 309.68
  4. Step 4: Simplify right side
    573.28x = 266,238.09
  5. Step 5: Solve for x
    x = 266,238.09/573.28
  6. Step 6: Final answer
    x = 464.41

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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.