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Finding the Fourth Proportional to 626.72, 941.90 and 581.45

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Solution

The fourth proportional to 626.72, 941.90 and 581.45 is: 873.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    626.72 : 941.90 = 581.45 : x
  2. Step 2: Convert to fraction form
    626.72/941.90 = 581.45/x
  3. Step 3: Cross multiply
    626.72x = 941.90 × 581.45
  4. Step 4: Simplify right side
    626.72x = 547,660.14
  5. Step 5: Solve for x
    x = 547,660.14/626.72
  6. Step 6: Final answer
    x = 873.86

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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.