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Finding the Fourth Proportional to 622.42, 859.25 and 482.22

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Solution

The fourth proportional to 622.42, 859.25 and 482.22 is: 665.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    622.42 : 859.25 = 482.22 : x
  2. Step 2: Convert to fraction form
    622.42/859.25 = 482.22/x
  3. Step 3: Cross multiply
    622.42x = 859.25 × 482.22
  4. Step 4: Simplify right side
    622.42x = 414,350.21
  5. Step 5: Solve for x
    x = 414,350.21/622.42
  6. Step 6: Final answer
    x = 665.71

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.