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Finding the Fourth Proportional to 535.04, 801.48 and 278

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Solution

The fourth proportional to 535.04, 801.48 and 278 is: 416.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    535.04 : 801.48 = 278 : x
  2. Step 2: Convert to fraction form
    535.04/801.48 = 278/x
  3. Step 3: Cross multiply
    535.04x = 801.48 × 278
  4. Step 4: Simplify right side
    535.04x = 222,811.44
  5. Step 5: Solve for x
    x = 222,811.44/535.04
  6. Step 6: Final answer
    x = 416.44

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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.