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Finding the Fourth Proportional to 622.06, 858.10 and 394.52

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Solution

The fourth proportional to 622.06, 858.10 and 394.52 is: 544.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    622.06 : 858.10 = 394.52 : x
  2. Step 2: Convert to fraction form
    622.06/858.10 = 394.52/x
  3. Step 3: Cross multiply
    622.06x = 858.10 × 394.52
  4. Step 4: Simplify right side
    622.06x = 338,535.55
  5. Step 5: Solve for x
    x = 338,535.55/622.06
  6. Step 6: Final answer
    x = 544.22

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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.