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Finding the Fourth Proportional to 534.68, 798.91 and 395.28

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Solution

The fourth proportional to 534.68, 798.91 and 395.28 is: 590.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    534.68 : 798.91 = 395.28 : x
  2. Step 2: Convert to fraction form
    534.68/798.91 = 395.28/x
  3. Step 3: Cross multiply
    534.68x = 798.91 × 395.28
  4. Step 4: Simplify right side
    534.68x = 315,793.14
  5. Step 5: Solve for x
    x = 315,793.14/534.68
  6. Step 6: Final answer
    x = 590.62

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.