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Finding the Fourth Proportional to 896.68, 1,245.70 and 888.67

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Solution

The fourth proportional to 896.68, 1,245.70 and 888.67 is: 1,234.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    896.68 : 1,245.70 = 888.67 : x
  2. Step 2: Convert to fraction form
    896.68/1,245.70 = 888.67/x
  3. Step 3: Cross multiply
    896.68x = 1,245.70 × 888.67
  4. Step 4: Simplify right side
    896.68x = 1,107,016.22
  5. Step 5: Solve for x
    x = 1,107,016.22/896.68
  6. Step 6: Final answer
    x = 1,234.57

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.