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Finding the Fourth Proportional to 873.67, 1,310.45 and 736.48

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Solution

The fourth proportional to 873.67, 1,310.45 and 736.48 is: 1,104.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    873.67 : 1,310.45 = 736.48 : x
  2. Step 2: Convert to fraction form
    873.67/1,310.45 = 736.48/x
  3. Step 3: Cross multiply
    873.67x = 1,310.45 × 736.48
  4. Step 4: Simplify right side
    873.67x = 965,120.22
  5. Step 5: Solve for x
    x = 965,120.22/873.67
  6. Step 6: Final answer
    x = 1,104.67

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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.