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Finding the Fourth Proportional to 864.92, 1,297.42 and 735.82

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Solution

The fourth proportional to 864.92, 1,297.42 and 735.82 is: 1,103.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    864.92 : 1,297.42 = 735.82 : x
  2. Step 2: Convert to fraction form
    864.92/1,297.42 = 735.82/x
  3. Step 3: Cross multiply
    864.92x = 1,297.42 × 735.82
  4. Step 4: Simplify right side
    864.92x = 954,662.50
  5. Step 5: Solve for x
    x = 954,662.50/864.92
  6. Step 6: Final answer
    x = 1,103.75

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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.