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Finding the Fourth Proportional to 626.24, 939.52 and 215.27

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Solution

The fourth proportional to 626.24, 939.52 and 215.27 is: 322.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    626.24 : 939.52 = 215.27 : x
  2. Step 2: Convert to fraction form
    626.24/939.52 = 215.27/x
  3. Step 3: Cross multiply
    626.24x = 939.52 × 215.27
  4. Step 4: Simplify right side
    626.24x = 202,249.57
  5. Step 5: Solve for x
    x = 202,249.57/626.24
  6. Step 6: Final answer
    x = 322.96

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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.