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Finding the Fourth Proportional to 572.06, 789.45 and 425.35

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Solution

The fourth proportional to 572.06, 789.45 and 425.35 is: 586.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    572.06 : 789.45 = 425.35 : x
  2. Step 2: Convert to fraction form
    572.06/789.45 = 425.35/x
  3. Step 3: Cross multiply
    572.06x = 789.45 × 425.35
  4. Step 4: Simplify right side
    572.06x = 335,791.95
  5. Step 5: Solve for x
    x = 335,791.95/572.06
  6. Step 6: Final answer
    x = 586.98

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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.