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Finding the Fourth Proportional to 712.01, 982.63 and 397.37

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Solution

The fourth proportional to 712.01, 982.63 and 397.37 is: 548.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    712.01 : 982.63 = 397.37 : x
  2. Step 2: Convert to fraction form
    712.01/982.63 = 397.37/x
  3. Step 3: Cross multiply
    712.01x = 982.63 × 397.37
  4. Step 4: Simplify right side
    712.01x = 390,468.40
  5. Step 5: Solve for x
    x = 390,468.40/712.01
  6. Step 6: Final answer
    x = 548.41

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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.