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Finding the Fourth Proportional to 592.44, 816.78 and 395.61

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Solution

The fourth proportional to 592.44, 816.78 and 395.61 is: 545.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    592.44 : 816.78 = 395.61 : x
  2. Step 2: Convert to fraction form
    592.44/816.78 = 395.61/x
  3. Step 3: Cross multiply
    592.44x = 816.78 × 395.61
  4. Step 4: Simplify right side
    592.44x = 323,126.34
  5. Step 5: Solve for x
    x = 323,126.34/592.44
  6. Step 6: Final answer
    x = 545.42

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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.