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Finding the Fourth Proportional to 534.92, 801.42 and 278.12

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Solution

The fourth proportional to 534.92, 801.42 and 278.12 is: 416.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    534.92 : 801.42 = 278.12 : x
  2. Step 2: Convert to fraction form
    534.92/801.42 = 278.12/x
  3. Step 3: Cross multiply
    534.92x = 801.42 × 278.12
  4. Step 4: Simplify right side
    534.92x = 222,890.93
  5. Step 5: Solve for x
    x = 222,890.93/534.92
  6. Step 6: Final answer
    x = 416.68

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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.