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Finding the Fourth Proportional to 896.08, 1,236.63 and 634.18

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Solution

The fourth proportional to 896.08, 1,236.63 and 634.18 is: 875.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    896.08 : 1,236.63 = 634.18 : x
  2. Step 2: Convert to fraction form
    896.08/1,236.63 = 634.18/x
  3. Step 3: Cross multiply
    896.08x = 1,236.63 × 634.18
  4. Step 4: Simplify right side
    896.08x = 784,246.01
  5. Step 5: Solve for x
    x = 784,246.01/896.08
  6. Step 6: Final answer
    x = 875.20

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1.5x scale

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.