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Finding the Fourth Proportional to 626.22, 939.18 and 365.66

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Solution

The fourth proportional to 626.22, 939.18 and 365.66 is: 548.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    626.22 : 939.18 = 365.66 : x
  2. Step 2: Convert to fraction form
    626.22/939.18 = 365.66/x
  3. Step 3: Cross multiply
    626.22x = 939.18 × 365.66
  4. Step 4: Simplify right side
    626.22x = 343,420.56
  5. Step 5: Solve for x
    x = 343,420.56/626.22
  6. Step 6: Final answer
    x = 548.40

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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.