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Finding the Fourth Proportional to 711.92, 982.68 and 504.56

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Solution

The fourth proportional to 711.92, 982.68 and 504.56 is: 696.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    711.92 : 982.68 = 504.56 : x
  2. Step 2: Convert to fraction form
    711.92/982.68 = 504.56/x
  3. Step 3: Cross multiply
    711.92x = 982.68 × 504.56
  4. Step 4: Simplify right side
    711.92x = 495,821.02
  5. Step 5: Solve for x
    x = 495,821.02/711.92
  6. Step 6: Final answer
    x = 696.46

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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.