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Finding the Fourth Proportional to 622.67, 859.31 and 342.92

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Solution

The fourth proportional to 622.67, 859.31 and 342.92 is: 473.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    622.67 : 859.31 = 342.92 : x
  2. Step 2: Convert to fraction form
    622.67/859.31 = 342.92/x
  3. Step 3: Cross multiply
    622.67x = 859.31 × 342.92
  4. Step 4: Simplify right side
    622.67x = 294,668.57
  5. Step 5: Solve for x
    x = 294,668.57/622.67
  6. Step 6: Final answer
    x = 473.23

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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.