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Finding the Fourth Proportional to 896.10, 1,236.20 and 541.65

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Solution

The fourth proportional to 896.10, 1,236.20 and 541.65 is: 747.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    896.10 : 1,236.20 = 541.65 : x
  2. Step 2: Convert to fraction form
    896.10/1,236.20 = 541.65/x
  3. Step 3: Cross multiply
    896.10x = 1,236.20 × 541.65
  4. Step 4: Simplify right side
    896.10x = 669,578.84
  5. Step 5: Solve for x
    x = 669,578.84/896.10
  6. Step 6: Final answer
    x = 747.22

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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.