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Finding the Fourth Proportional to 1,324.72, 1,828.12 and 735.31

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Solution

The fourth proportional to 1,324.72, 1,828.12 and 735.31 is: 1,014.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,324.72 : 1,828.12 = 735.31 : x
  2. Step 2: Convert to fraction form
    1,324.72/1,828.12 = 735.31/x
  3. Step 3: Cross multiply
    1,324.72x = 1,828.12 × 735.31
  4. Step 4: Simplify right side
    1,324.72x = 1,344,225.78
  5. Step 5: Solve for x
    x = 1,344,225.78/1,324.72
  6. Step 6: Final answer
    x = 1,014.73

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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.