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Finding the Fourth Proportional to 712.58, 982.67 and 432.86

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Solution

The fourth proportional to 712.58, 982.67 and 432.86 is: 596.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    712.58 : 982.67 = 432.86 : x
  2. Step 2: Convert to fraction form
    712.58/982.67 = 432.86/x
  3. Step 3: Cross multiply
    712.58x = 982.67 × 432.86
  4. Step 4: Simplify right side
    712.58x = 425,351.46
  5. Step 5: Solve for x
    x = 425,351.46/712.58
  6. Step 6: Final answer
    x = 596.92

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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.