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Finding the Fourth Proportional to 896.39, 1,236.08 and 581.30

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Solution

The fourth proportional to 896.39, 1,236.08 and 581.30 is: 801.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    896.39 : 1,236.08 = 581.30 : x
  2. Step 2: Convert to fraction form
    896.39/1,236.08 = 581.30/x
  3. Step 3: Cross multiply
    896.39x = 1,236.08 × 581.30
  4. Step 4: Simplify right side
    896.39x = 718,528.58
  5. Step 5: Solve for x
    x = 718,528.58/896.39
  6. Step 6: Final answer
    x = 801.58

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Double scale
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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.