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Finding the Fourth Proportional to 573.36, 859.04 and 390.16

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Solution

The fourth proportional to 573.36, 859.04 and 390.16 is: 584.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    573.36 : 859.04 = 390.16 : x
  2. Step 2: Convert to fraction form
    573.36/859.04 = 390.16/x
  3. Step 3: Cross multiply
    573.36x = 859.04 × 390.16
  4. Step 4: Simplify right side
    573.36x = 335,163.05
  5. Step 5: Solve for x
    x = 335,163.05/573.36
  6. Step 6: Final answer
    x = 584.56

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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.