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Finding the Fourth Proportional to 951.67, 1,313.22 and 558.55

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Solution

The fourth proportional to 951.67, 1,313.22 and 558.55 is: 770.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    951.67 : 1,313.22 = 558.55 : x
  2. Step 2: Convert to fraction form
    951.67/1,313.22 = 558.55/x
  3. Step 3: Cross multiply
    951.67x = 1,313.22 × 558.55
  4. Step 4: Simplify right side
    951.67x = 733,499.03
  5. Step 5: Solve for x
    x = 733,499.03/951.67
  6. Step 6: Final answer
    x = 770.75

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.