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Finding the Fourth Proportional to 796.23, 1,099.67 and 631.67

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Solution

The fourth proportional to 796.23, 1,099.67 and 631.67 is: 872.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    796.23 : 1,099.67 = 631.67 : x
  2. Step 2: Convert to fraction form
    796.23/1,099.67 = 631.67/x
  3. Step 3: Cross multiply
    796.23x = 1,099.67 × 631.67
  4. Step 4: Simplify right side
    796.23x = 694,619.89
  5. Step 5: Solve for x
    x = 694,619.89/796.23
  6. Step 6: Final answer
    x = 872.39

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1.5x scale

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.