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Finding the Fourth Proportional to 1,325.67, 1,988.96 and 676.23

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Solution

The fourth proportional to 1,325.67, 1,988.96 and 676.23 is: 1,014.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,325.67 : 1,988.96 = 676.23 : x
  2. Step 2: Convert to fraction form
    1,325.67/1,988.96 = 676.23/x
  3. Step 3: Cross multiply
    1,325.67x = 1,988.96 × 676.23
  4. Step 4: Simplify right side
    1,325.67x = 1,344,991.04
  5. Step 5: Solve for x
    x = 1,344,991.04/1,325.67
  6. Step 6: Final answer
    x = 1,014.57

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.