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Finding the Fourth Proportional to 572.65, 789.82 and 432.79

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Solution

The fourth proportional to 572.65, 789.82 and 432.79 is: 596.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    572.65 : 789.82 = 432.79 : x
  2. Step 2: Convert to fraction form
    572.65/789.82 = 432.79/x
  3. Step 3: Cross multiply
    572.65x = 789.82 × 432.79
  4. Step 4: Simplify right side
    572.65x = 341,823.14
  5. Step 5: Solve for x
    x = 341,823.14/572.65
  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.