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Finding the Fourth Proportional to 873.03, 1,311.36 and 736.34

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Solution

The fourth proportional to 873.03, 1,311.36 and 736.34 is: 1,106.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    873.03 : 1,311.36 = 736.34 : x
  2. Step 2: Convert to fraction form
    873.03/1,311.36 = 736.34/x
  3. Step 3: Cross multiply
    873.03x = 1,311.36 × 736.34
  4. Step 4: Simplify right side
    873.03x = 965,606.82
  5. Step 5: Solve for x
    x = 965,606.82/873.03
  6. Step 6: Final answer
    x = 1,106.04

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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.