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Finding the Fourth Proportional to 626.13, 938.81 and 260.46

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Solution

The fourth proportional to 626.13, 938.81 and 260.46 is: 390.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    626.13 : 938.81 = 260.46 : x
  2. Step 2: Convert to fraction form
    626.13/938.81 = 260.46/x
  3. Step 3: Cross multiply
    626.13x = 938.81 × 260.46
  4. Step 4: Simplify right side
    626.13x = 244,523.10
  5. Step 5: Solve for x
    x = 244,523.10/626.13
  6. Step 6: Final answer
    x = 390.53

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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.