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Finding the Fourth Proportional to 622.97, 859.11 and 465.98

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Solution

The fourth proportional to 622.97, 859.11 and 465.98 is: 642.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    622.97 : 859.11 = 465.98 : x
  2. Step 2: Convert to fraction form
    622.97/859.11 = 465.98/x
  3. Step 3: Cross multiply
    622.97x = 859.11 × 465.98
  4. Step 4: Simplify right side
    622.97x = 400,323.78
  5. Step 5: Solve for x
    x = 400,323.78/622.97
  6. Step 6: Final answer
    x = 642.61

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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.