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Finding the Fourth Proportional to 892.78, 1,230.46 and 753.26

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Solution

The fourth proportional to 892.78, 1,230.46 and 753.26 is: 1,038.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    892.78 : 1,230.46 = 753.26 : x
  2. Step 2: Convert to fraction form
    892.78/1,230.46 = 753.26/x
  3. Step 3: Cross multiply
    892.78x = 1,230.46 × 753.26
  4. Step 4: Simplify right side
    892.78x = 926,856.30
  5. Step 5: Solve for x
    x = 926,856.30/892.78
  6. Step 6: Final answer
    x = 1,038.17

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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.