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Finding the Fourth Proportional to 626.20, 939.34 and 314.16

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Solution

The fourth proportional to 626.20, 939.34 and 314.16 is: 471.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    626.20 : 939.34 = 314.16 : x
  2. Step 2: Convert to fraction form
    626.20/939.34 = 314.16/x
  3. Step 3: Cross multiply
    626.20x = 939.34 × 314.16
  4. Step 4: Simplify right side
    626.20x = 295,103.05
  5. Step 5: Solve for x
    x = 295,103.05/626.20
  6. Step 6: Final answer
    x = 471.26

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1.5x scale

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.