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Finding the Fourth Proportional to 1,302.79, 1,797.87 and 713.38

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Solution

The fourth proportional to 1,302.79, 1,797.87 and 713.38 is: 984.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,302.79 : 1,797.87 = 713.38 : x
  2. Step 2: Convert to fraction form
    1,302.79/1,797.87 = 713.38/x
  3. Step 3: Cross multiply
    1,302.79x = 1,797.87 × 713.38
  4. Step 4: Simplify right side
    1,302.79x = 1,282,564.50
  5. Step 5: Solve for x
    x = 1,282,564.50/1,302.79
  6. Step 6: Final answer
    x = 984.48

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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.