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Finding the Fourth Proportional to 626.93, 865.25 and 378.26

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Solution

The fourth proportional to 626.93, 865.25 and 378.26 is: 522.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    626.93 : 865.25 = 378.26 : x
  2. Step 2: Convert to fraction form
    626.93/865.25 = 378.26/x
  3. Step 3: Cross multiply
    626.93x = 865.25 × 378.26
  4. Step 4: Simplify right side
    626.93x = 327,287.57
  5. Step 5: Solve for x
    x = 327,287.57/626.93
  6. Step 6: Final answer
    x = 522.05

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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.