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Finding the Fourth Proportional to 534.19, 801.44 and 388.09

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Solution

The fourth proportional to 534.19, 801.44 and 388.09 is: 582.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    534.19 : 801.44 = 388.09 : x
  2. Step 2: Convert to fraction form
    534.19/801.44 = 388.09/x
  3. Step 3: Cross multiply
    534.19x = 801.44 × 388.09
  4. Step 4: Simplify right side
    534.19x = 311,024.90
  5. Step 5: Solve for x
    x = 311,024.90/534.19
  6. Step 6: Final answer
    x = 582.24

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.