Home / 626.06-939.23-215.20

Finding the Fourth Proportional to 626.06, 939.23 and 215.20

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Solution

The fourth proportional to 626.06, 939.23 and 215.20 is: 322.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    626.06 : 939.23 = 215.20 : x
  2. Step 2: Convert to fraction form
    626.06/939.23 = 215.20/x
  3. Step 3: Cross multiply
    626.06x = 939.23 × 215.20
  4. Step 4: Simplify right side
    626.06x = 202,122.30
  5. Step 5: Solve for x
    x = 202,122.30/626.06
  6. Step 6: Final answer
    x = 322.85

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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.