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Finding the Fourth Proportional to 626.85, 938.61 and 395.46

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Solution

The fourth proportional to 626.85, 938.61 and 395.46 is: 592.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    626.85 : 938.61 = 395.46 : x
  2. Step 2: Convert to fraction form
    626.85/938.61 = 395.46/x
  3. Step 3: Cross multiply
    626.85x = 938.61 × 395.46
  4. Step 4: Simplify right side
    626.85x = 371,182.71
  5. Step 5: Solve for x
    x = 371,182.71/626.85
  6. Step 6: Final answer
    x = 592.14

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.