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Finding the Fourth Proportional to 626.01, 939.02 and 215.15

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Solution

The fourth proportional to 626.01, 939.02 and 215.15 is: 322.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    626.01 : 939.02 = 215.15 : x
  2. Step 2: Convert to fraction form
    626.01/939.02 = 215.15/x
  3. Step 3: Cross multiply
    626.01x = 939.02 × 215.15
  4. Step 4: Simplify right side
    626.01x = 202,030.15
  5. Step 5: Solve for x
    x = 202,030.15/626.01
  6. Step 6: Final answer
    x = 322.73

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Similar ratio
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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.