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Finding the Fourth Proportional to 896.13, 1,236.12 and 541.80

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Solution

The fourth proportional to 896.13, 1,236.12 and 541.80 is: 747.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    896.13 : 1,236.12 = 541.80 : x
  2. Step 2: Convert to fraction form
    896.13/1,236.12 = 541.80/x
  3. Step 3: Cross multiply
    896.13x = 1,236.12 × 541.80
  4. Step 4: Simplify right side
    896.13x = 669,729.82
  5. Step 5: Solve for x
    x = 669,729.82/896.13
  6. Step 6: Final answer
    x = 747.36

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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.