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Finding the Fourth Proportional to 726.92, 1,090.40 and 362.44

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Solution

The fourth proportional to 726.92, 1,090.40 and 362.44 is: 543.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    726.92 : 1,090.40 = 362.44 : x
  2. Step 2: Convert to fraction form
    726.92/1,090.40 = 362.44/x
  3. Step 3: Cross multiply
    726.92x = 1,090.40 × 362.44
  4. Step 4: Simplify right side
    726.92x = 395,204.58
  5. Step 5: Solve for x
    x = 395,204.58/726.92
  6. Step 6: Final answer
    x = 543.67

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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.