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Finding the Fourth Proportional to 626.72, 940.16 and 297.84

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Solution

The fourth proportional to 626.72, 940.16 and 297.84 is: 446.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    626.72 : 940.16 = 297.84 : x
  2. Step 2: Convert to fraction form
    626.72/940.16 = 297.84/x
  3. Step 3: Cross multiply
    626.72x = 940.16 × 297.84
  4. Step 4: Simplify right side
    626.72x = 280,017.25
  5. Step 5: Solve for x
    x = 280,017.25/626.72
  6. Step 6: Final answer
    x = 446.80

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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.