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Finding the Fourth Proportional to 539.12, 808.54 and 264.68

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Solution

The fourth proportional to 539.12, 808.54 and 264.68 is: 396.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    539.12 : 808.54 = 264.68 : x
  2. Step 2: Convert to fraction form
    539.12/808.54 = 264.68/x
  3. Step 3: Cross multiply
    539.12x = 808.54 × 264.68
  4. Step 4: Simplify right side
    539.12x = 214,004.37
  5. Step 5: Solve for x
    x = 214,004.37/539.12
  6. Step 6: Final answer
    x = 396.95

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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.