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Finding the Fourth Proportional to 1,253.80, 1,730.22 and 694.27

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Solution

The fourth proportional to 1,253.80, 1,730.22 and 694.27 is: 958.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,253.80 : 1,730.22 = 694.27 : x
  2. Step 2: Convert to fraction form
    1,253.80/1,730.22 = 694.27/x
  3. Step 3: Cross multiply
    1,253.80x = 1,730.22 × 694.27
  4. Step 4: Simplify right side
    1,253.80x = 1,201,227.72
  5. Step 5: Solve for x
    x = 1,201,227.72/1,253.80
  6. Step 6: Final answer
    x = 958.07

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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.