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Finding the Fourth Proportional to 626.86, 939.50 and 444.30

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Solution

The fourth proportional to 626.86, 939.50 and 444.30 is: 665.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    626.86 : 939.50 = 444.30 : x
  2. Step 2: Convert to fraction form
    626.86/939.50 = 444.30/x
  3. Step 3: Cross multiply
    626.86x = 939.50 × 444.30
  4. Step 4: Simplify right side
    626.86x = 417,419.85
  5. Step 5: Solve for x
    x = 417,419.85/626.86
  6. Step 6: Final answer
    x = 665.89

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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.